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Developer's Blog : Monster Movement Improvements
Greetings Saviors! This is Tree of Savior Dev. Team. In this post, we are going to introduce the work we are currently doing to improve the quality of monster movement. Current Issues with Monster Movement Engaging in battles against swarms of enemies with a variety of skills has been a core element of Tree of Savior's gameplay. For that reason, how monsters move and position themselves has a significant impact on the combat flow. However, due to the limitations of the existing pathfinding algorithm and synchronization, multiple monsters moving along the same route tended to clump together and appear as a single mass. When dozens of monsters stack into a single spot, it becomes difficult to tell how many enemies are actually present. This also makes battles look less dynamic than intended. In addition, since you end up facing enemies gathered at a single point, almost any skill leads to a same result, which made the combat feel monotonous. To improve this, the Dev. team is working on introducing a collision avoidance feature to monster movement, and in this post we would like to share an update on our progress so far. Improved Monster Movement When monsters move, they now recognize the positions of other monsters around them in real time and naturally move aside so as not to collide with one another. Before & After Comparison Before: After: Before applying the feature, once monsters spawned, each would move in a straight line toward a specific target point, overlapping with nearby monsters and even passing straight through monsters from other groups. After applying the collision avoidance feature, monsters maintain their formation while securing their own space, so they no longer collide with one another while moving toward their target. You can also see them slipping through the gaps when passing by monsters from another group. As shown in the comparison video, we are optimizing monster behavior to reduce excessive clustering during collision checks and pathfinding in large-scale combat scenarios involving many monsters and players. Plans Going Forward Unlike a single-player game, monster movement in MMORPG must account for both large numbers of monsters and unpredictable player actions. As a result, applying collision avoidance to every monster at all times can significantly increase the server-client load and make it difficult to guarantee a stable play environment. Furthermore, this is still a feature with much room for tuning and many exceptional cases, so a process of securing sufficient stability is required. Therefore, we plan to continue optimizing performance in parallel and to activate this feature step by step, starting with the content where it has the fewest side effects and the clearest benefits. Once this work is settled in, we expect that various types of skills, such as wide-area skills that cover a broad range and high-power piercing skills with a narrow range, will be able to deliver more differentiated effects than they do now. As a result, we believe this will lead to further strengthening the individuality of each class and the visual impact of hits. The Dev. team aims to provide a better play experience not only through episode expansions and new content, but also through engine improvements. We will continue refining this system and monitoring its impact on combat as development progresses. Thank you. ※ The contents described in this Developer Blog are still in development, and details may be added or changed when applied to the live service.
Scheduled Maintenance for June 22~23, 2026
Greetings, Saviors!We would like to announce the details of our weekly maintenance for (June 23, 2026). Make sure to check below for the maintenance schedule and patch notes.Please note that other issues and bugs are also being worked on even if they are not mentioned below.
Patch Note Preview: June 22~23, 2026
Greetings, Saviors!We would like to announce the details of our weekly maintenance for (June 23, 2026). Make sure to check below for the maintenance schedule and patch notes.Please note that other issues and bugs are also being worked on even if they are not mentioned below.
Patch without Maintenance: June 22, 2026
Greetings Savior, On June 22, 2026, a patch went live on KST 18:25 due to the following changes: - The issue where Shard Ricochet caused excessive damage - The issue where character-bound costumes could be registered to personal costume collection Please leave the current area or channel for the normal application of the patch above. Thank you.
[TOS] Gameplay Style and Satisfaction Survey
Greetings Saviors, We would like to express our sincere gratitude to all of our Saviors who enjoy our game. This survey is intended to understand how Saviors first discovered <Tree of Savior>, and to listen closely to your overall satisfaction as well as your expectations for future updates. Please take a few moments to participate. Survey Link: - ENG: https://forms.gle/DDV7ijiYa6WfkPC48 As a token of our appreciation, all Saviors who complete the survey will receive the items listed below. Total of 17 questions (* indicates required questions.) Survey Guide - Period: June 18, 2026 – July 1, 2026 KST (Total of 14 days) - Estimated Time: Approximately 5-10 minutes Survey Rewards - Goddess Token(Austeja) : 50,000 x10 - [Event] TOS Platinum Coin x700 - Challenge Mode : [Lv.540] Division Singularity Add. Reward Voucher (7 Days) x10 - Sealed Dragon's Heights (Auto/Solo) One Entry Voucher (7 Days) x5 - Silent Forest - Belliora (Auto/Solo) One Entry Voucher (7 Days) x2 - Silent Forest - Laimara (Auto/Solo) One Entry Voucher (7 Days) x2 Precautions (Required) - To ensure reward delivery, please correctly enter your Server Name and Team Name at the end of the survey. - This reward will be distributed only once per Team based on the information provided after the survey period. - You can modify your submitted answers after submission until the survey period ends.
Scheduled Maintenance for June 15~16, 2026
Greetings, Saviors!We would like to announce the details of our weekly maintenance for (June 16, 2026). Make sure to check below for the maintenance schedule and patch notes.Please note that other issues and bugs are also being worked on even if they are not mentioned below.
Popo Boost Season 11
Greetings, Saviors. Ready to be Boosted? Let’s get Popo Boosted! Event Period After the scheduled maintenance on June 16, 2026 TO the scheduled maintenance on Sept 01, 2026 (KST) Who Can Participate - Every character with Lv.9 or lower ※ ONLY ONE character can participate per team. ※ The character chosen to participate in the event can not be changed midway. How to Participate Step 1. Click the Icon at the left of the Mini-map to open the event window. Step 1-2. Click the “Apply for Event” button in the pop-up with the character you wish to participate! Step 1-3. Confirm to proceed with the event after typing in the required phrase in the warning window! [Caution] ※ ONLY ONE character can participate per team. ※ The character chosen to participate in the event can not be changed whatsoever. Now you’re ready to get BOOSTED! ▶ Click the Guide for the New/Returning Saviors if you wish to enjoy the event step-by-step! Step 2. After following the steps above, you are automatically sent to NPC ‘Inesa Hamondale’ at Orsha after these changes! ▶ The Popo Boost character automatically becomes… - Lv.530 - Clears quests from Episode 1~14-2 - Quest rewards and EXP will not be given. - Episode rewards (F4) can be taken normally - Receives Popo Special Buff and Challenge Mode Solo event → Popo Special Buff: Final DMG dealt in Fields, Challenge ▲ 50%, Final DMG received in Fields, Challenge ▼ 50% (Does not stack with the passive effect of the Assister) → Popo Special Buff: Does not have to complete quests to enter the Goddess Raids (Hard) for [Brutal Ledania], [Foretold Noire], and [Collapsing Mines] - Receives Popo Special Equipment Box x1 (Bound to the character) and items required to clear the main quest - Choose 1 according to your class! Item Level Enhancement Quantity Trade/Market Popo Boost Weapon Box - - 2 Character Bound ※ Cannot Unbound Popo Boost Sub-weapon Box - - 2 Popo Boost Armor Box - - 1 Popo Boost Weapon Box Black Revelation Sword Lv.520 10 Choose 1 per box Character Bound ※ Cannot Unbound Black Revelation Two-handed Sword Black Revelation Rod Black Revelation Bow Black Revelation Crossbow Black Revelation Mace Black Revelation Two-handed Mace Black Revelation Spear Black Revelation Pike Black Revelation Staff Black Revelation Rapier Black Revelation Cannon Black Revelation Musket Popo Boost Sub-Weapon Box Black Revelation Shield Lv.520 10 Choose 1 per box Character Bound ※ Cannot Unbound Black Revelation Dagger Black Revelation Pistol Black Revelation Trinket Popo Boost Armor Box Item Level Enhancement Quantity Trade/Market Azure Crystal Leather Armor 520 10 1 Character Bound ※ Cannot Unbound Azure Crystal Leather Pants 1 Azure Crystal Leather Gloves 1 Azure Crystal Leather Boots 1 [Jurate] Spaulder of Ferocity 480 - 1 [Jurate] Belt of Insight 470 - 1 Kalentis Pyktis Necklace 530 10 1 Kalentis Pyktis Bracelet 2 Boruta Seal - Common 380 4 1 Ark - Divine Retribution 420 10 1 [Event] Fire Flame Earring 470 - 1 Silver - - 5000 - Step 3. Complete achievements of the Popo Boost Character and receive rewards when you reach a check point! - You will receive a reward when you reach every check point, and there will be a total of 7 check points. [TIP] - By Purchasing the Boost Premium Ticket, you can additionally obtain the premium rewards along with the basic rewards. - The rewards you can obtain by reaching each Check Point are as follows: Check Point Basic Reward Premium Reward 1 [Lv3] Goddess'/Demon God's Armor Register Voucher x4 Class EXP Card Box x1 [Event] Small Elixir of HP Recovery x20 Small Elixir of SP Recovery x20 Attribute Points: 100,000 x20 [Event] Mystic Tome x120 Emote Plus: El x1 Class Unlock Achievement Selection Box x1 Friendship Token x8 [Lv.520] Aether Gem Socket Key (Untradable) x4 [Lv.520] Aether Gem Fragment x4 [Lv.520] Aether Gem LV UP Scroll (+100) x4 2 [Lv4] Vaivora Vision Register Voucher x3 x16 EXP Tome (14 Days) x1 Mercenary Badge : 10,000 x4 [Lv.520] Equipment Type Change Tome (1 Day) x4 Colored Gem Selection Box x8 10-Star Gem Abrasive x8 Mercenary Badge : 10,000 x4 [Lv.520] Equipment Type Change Tome x4 3 Condensed Crystal Bead x180 [Lv.530] Enhance Aid (Untradable) x70 Goddess Token (Jurate) : 50,000 x2 Collapsing Mines (Auto/Solo) One Entry Voucher (7 Days) x2 Condensed Crystal Bead x75 [Lv.530] Enhance Aid (Untradable) x30 Premium Enhance Aid x15 Mercenary Badge : 10,000 x4 4 Condensed Crystal Bead x540 [Lv.530] Enhance Aid (Untradable) x205 Goddess Token (Jurate) : 50,000 x4 Collapsing Mines (Auto/Solo) One Entry Voucher (7 Days) x2 Condensed Crystal Bead x225 [Lv.530] Enhance Aid (Untradable) x85 Premium Enhance Aid x15 Mercenary Badge : 10,000 x4 5 Remnant of Dark Revelation x720 [Lv.530] Enhance Aid (Untradable) x270 Goddess Token (Jurate): 50,000 x5 Foretold Noire (Auto/Solo) One Entry Voucher (7 Days) x2 Remnant of Dark Revelation x300 [Lv.530] Enhance Aid (Untradable) x115 Premium Enhance Aid x15 Mercenary Badge : 10,000 x4 6 Dark Essence of Ledania x520 [Lv.530] Enhance Aid (Untradable) x205 Goddess Token (Jurate): 50,000 x4 Brutal Ledania (Auto/Solo) One Entry Voucher (7 Days) x2 Dark Essence of Ledania x220 [Lv.530] Enhance Aid (Untradable) x85 Premium Enhance Aid x15 Mercenary Badge : 10,000 x4 7 Special Class Unlock Voucher Selection Box x1 [Jurate] Advanced Spaulder of Ferocity Fragment (Bound) x1 [Jurate] Advanced Belt of Insight Fragment (Bound) x1 [Event] Popo Roulette Coin x5 Title - pirate kitty x1 Mystic Fire Flame Earring Fragment (Bound) x1 Goddess Token(Austeja): 50,000 x5 [Event] Popo Roulette Coin x5 ▶Special Class Unlock Voucher Selection Box x1 Item Name Count Trade Special Class Unlock Voucher Selection Box #1 1 Team Storage Only Special Class Unlock Voucher Selection Box #2 1 Team Storage Only Special Class Unlock Voucher Selection Box #3 1 Team Storage Only Special Class Unlock Voucher Selection Box #4 1 Team Storage Only Special Class Unlock Voucher Selection Box #5 1 Team Storage Only - You can choose ONE of the items from the list above. ▷ Special Class Unlock Voucher Selection Box #1 (Choose and obtain one of the items below): - Swordsman - Winged Hussar Special Class Unlock Voucher (Untradable) - Wizard - Illusionist Special Class Unlock Voucher (Untradable) - Archer - Godeye Special Class Unlock Voucher (Untradable) - Cleric - Pontifex Special Class Unlock Voucher (Untradable) - Scout - Desperado Special Class Unlock Voucher (Untradable) - Mercenary Badge : 50,000 x3 ▷ Special Class Unlock Voucher Selection Box #2(Choose and obtain one of the items below): - Swordsman - Vanquisher Special Class Unlock Voucher (Untradable) - Wizard - Vulture Special Class Unlock Voucher (Untradable) - Archer - Vulture Special Class Unlock Voucher (Untradable) - Cleric - Sledger[C] Special Class Unlock Voucher (Untradable) - Scout - Vulture Special Class Unlock Voucher (Untradable) - Mercenary Badge : 50,000 x3 ▷ Special Class Unlock Voucher Selection Box #3(Choose and obtain one of the items below): - Swordsman - Sledger[S] Special Class Unlock Voucher(Untradable) - Wizard - Bonemancer[W] Special Class Unlock Voucher(Untradable) - Archer - Bonemancer[A] Special Class Unlock Voucher(Untradable) - Cleric - Bonemancer[C] Special Class Unlock Voucher(Untradable) - Scout - Blitzhunter[T] Special Class Unlock Voucher(Untradable) - Mercenary Badge : 50,000 x3 ▷ Special Class Unlock Voucher Selection Box #4(Choose and obtain one of the items below): - Swordsman - Bonemancer[S] Special Class Unlock Voucher(Untradable) - Wizard - Aether Blader[W] Special Class Unlock Voucher(Untradable) - Archer - Blitz Hunter[A] Special Class Unlock Voucher(Untradable) - Cleric - Aether Blader[C] Special Class Unlock Voucher(Untradable) - Scout - Aether Blader[T] Special Class Unlock Voucher(Untradable) - Mercenary Badge : 50,000 x3 ▷ Special Class Unlock Voucher Selection Box #5(Choose and obtain one of the items below): - Swordsman - Grimmark[S] Special Class Unlock Voucher(Untradable) - Wizard - Hermit[W] Special Class Unlock Voucher(Untradable) - Archer - Hermit[A] Special Class Unlock Voucher(Untradable) - Cleric - Hermit[C] Special Class Unlock Voucher(Untradable) - Scout - Grimmark[T] Special Class Unlock Voucher(Untradable) - Mercenary Badge : 50,000 x3 ▶ Emote Plus: El ▶ Title - pirate kitty Step 4. Spin the Popo Roulette with the Popo Roulette Coins! - The rank and rewards of the Roulette are as follows. Rank Item Quantity Probability SS [Lv.540] Aether Gem Socket Key (Untradable) 4 0.01% SS [Lv.540] Evolution Stone (Untradable) 1 0.01% S [POPO] Lottery Silver Chest 2 0.50% S Mystic Fire Flame Earring Fragment (Bound) 1 0.50% S Kupole Recruit Voucher 10 0.50% S [Exchange] Bright Enchant Scroll 10 0.50% A [Lv.540] Aether Gem Catalyst (Untradable) 10 4.50% A Mercenary Badge : 50,000 2 4.50% A [Lv.540] Enhance Aid (Untradable) 30 4.50% A Goddess Token(Austeja): 50,000 2 4.50% B [Lv.540] Enhance Aid (Untradable) 10 10.00% B [Lv.520] Aether Gem Catalyst (Untradable) 3 10.00% B [Fishing] Mercenary Badge : 10,000 3 10.00% B Goddess Token(Austeja): 10,000 3 10.00% C [Event] Small Elixir of HP Recovery 10 10.00% C [Event] Small Elixir of SP Recovery 10 10.00% C Mercenary Badge : 10,000 2 10.00% C Goddess Token(Austeja): 10,000 2 10.00% - The items above can only be transferred via team storage. Step 5. Click the Guide Icon next to the Roulette icon and receive the rewards by completing the mission! - The next stage of Guide Quest missions unlocks when you complete the current stage's missions. - By completing every single mission, you can obtain an ALL CLEAR reward along with many other rewards on the way! Important - The rewards given by finishing the achievements can only be taken during the event period. - By using the Boost Premium Ticket after the event Period, you will receive the other items instead of the Premium reward listed above.
HOT Summer Packages
Greetings, Saviors! The summer heat is on! Dive into our HOT Summer Packages and discover the cool items waiting inside. Period After the scheduled maintenance on June16, 2026 To September 21, 2026 09:59:59 AM (KST) HOT Entry Voucher Package 285TP Max: 5 per team Item Name Cnt Trade Mystic Fire Flame Earring Fragment (Untradable) 1 Team Storage Only Sealed Dragon's Heights: Goddess One Entry Voucher (Untradable) 2 Team Storage Only [Lv.480] Skill Jewel 30 Market Tradable Goddess Token(Austeja) : 50,000 2 Team Storage Only HOT Add. Reward Package 290TP Max: 5 per team Item Name Cnt Trade Mystic Fire Flame Earring Fragment (Untradable) 1 Team Storage Only Sealed Dragon's Height: Party (Hard) Additional Reward Voucher 2 Team Storage Only [Lv.540] Sparkling Skill Gem Fragment (Untradable) 140 Market Tradable Goddess Token(Austeja) : 50,000 2 Team Storage Only HOT Awaken Package 290TP Max: 5 per team Item Name Cnt Trade [Lv.540] Awaken Stone 40 Team Storage Only [Lv.540] Core Fragment Selection Box (Untradable) 3 Team Storage Only [Lv.540] Arcanum of STR 2 Team Storage Only [Lv.540] Arcanum of INT 2 Team Storage Only Goddess Token(Austeja) : 50,000 2 Team Storage Only HOT All-in-One Package 791TP Max: 3 per team Item Name Cnt Trade HOT Entry Voucher Package 1 Team Storage Only HOT Add. Reward Package 1 Team Storage Only HOT Awaken Package 1 Team Storage Only Goddess Grace Weapon Ichor Box (Untradable) 1 Team Storage Only Goddess Grace Armor Ichor Box (Untradable) 1 Team Storage Only Goddess Grace Ichor Boxes: - Use to obtain a Goddess Ichor with a random Grace stat that can be succeeded. - You can succeed a Grace stat as the 5th stat of the current Ichor stats by engraving it via Goddess Equipment Management window (Engrave -> Ichor) Summer Boost Package 145TP Max: 5 per team Item Name Cnt Trade Premium Enhance Aid 30 Team Storage Only [Lv.550] Enhance Aid (Untradable) 150 Team Storage Only Condensed Essence of Belliora 300 Team Storage Only Condensed Essence of Laimara 300 Team Storage Only Dragon Slayer's Fire Resistance Elixir 2 Team Storage Only Dragon Slayer's Fierce Elixir 2 Team Storage Only Goddess Token(Austeja) : 50,000 2 Team Storage Only Summer Support Package 193TP Max: 5 per team Item Name Cnt Trade Weight +1000 Increase Potion 10 Team Storage Only Legend/Unique Assister Box 10 Team Storage Only x32 EXP Tome 1 Team Storage Only [Lv.480] Skill Jewel 10 Team Storage Only Goddess Token(Austeja) : 50,000 2 Team Storage Only Flame Blessing Package 329TP Max: 5 per team Item Name Cnt Trade Mystic Fire Flame Earring Fragment (Untradable) 2 Team Storage Only [Lv.480] Skill Jewel 20 Team Storage Only [Lv.540] Advanced Goddess Ichor (Weapon) Fragment II (Untradable) 5 Team Storage Only [Lv.540] Advanced Goddess Ichor (Armor) Fragment II (Untradable) 5 Team Storage Only Goddess Token(Austeja) : 50,000 2 Team Storage Only Summer All-in-One Package 652TP Max: 3 per team Item Name Cnt Trade Summer Boost Package 1 Team Storage Only Summer Support Package 1 Team Storage Only Summer All-in-One Package 1 Team Storage Only Goddess Grace Weapon Ichor Box (Untradable) 1 Team Storage Only Goddess Grace Armor Ichor Box (Untradable) 1 Team Storage Only Goddess Grace Ichor Boxes: - Use to obtain a Goddess Ichor with a random Grace stat that can be succeeded. - You can succeed a Grace stat as the 5th stat of the current Ichor stats by engraving it via Goddess Equipment Management window (Engrave -> Ichor) Jurate Equipment Collection Box 168TP Max: 3 per team Item Name Cnt Trade [Jurate] Universal Collection Stone 2 Team Storage Only [Lv.520] Arcanum of STR 5 Team Storage Only [Lv.520] Arcanum of INT 5 Team Storage Only Bright Enchant Scroll (Untradable) 10 Team Storage Only Mercenary Badge : 50,00 2 Team Storage Only [Jurate] Universal Collection Stone - Can embed on any of the [Jurate] Weapon Collections Lada Equipment Collection Box 162TP Max: 3 per team Item Name Cnt Trade [Lada] Universal Collection Stone 2 Team Storage Only [Lv.520] Arcanum of STR 5 Team Storage Only [Lv.520] Arcanum of INT 5 Team Storage Only Bright Enchant Scroll (Untradable) 10 Team Storage Only Mercenary Badge : 50,00 2 Team Storage Only [Lada] Universal Collection Stone - Can embed on any of the [Lada] Weapon Collections
Patch Note Preview: June 15~16, 2026
Greetings, Saviors!We would like to announce the details of our weekly maintenance for (June 16, 2026). Make sure to check below for the maintenance schedule and patch notes.Please note that other issues and bugs are also being worked on even if they are not mentioned below.