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Developer's Blog : PvP Formula Overhaul
Greetings, Saviors. This is the Tree of Savior Dev Team. Today, we would like to share the Dev Team's insights and direction regarding the PvP Calculation Formula (Accuracy, Critical Rate, Block) Overhaul scheduled for an upcoming update. As the character progression cap has continuously expanded and overall specs have significantly increased, we have identified that the existing PvP formula structure no longer aligns with the current combat environment. We have prepared this overhaul to address these limitations. Please read below for details on what will be changing. 1. Limitations of the Existing Formula The current formulas in use are as follows: Accuracy (%) = { 90 + L( (My Accuracy - Opponent Evasion + (My Level - Opponent Level) * 10) / (Opponent Level * 15) * 100 ) } * Level Adjustment Critical Chance (%) = 10 + L( (My Critical Rate - Opponent Critical Resistance) / (Opponent Level * 15) * 100 ) Block Rate (%) = 30 + L( (My Block - Opponent Block Penetration) / (Opponent Level * 15) * 100 ) L(x) = ( ln(x + 6.01) / ln(1.06) - 30.8 ) * 0.8 (If x is negative: -L(|x|)) The existing formulas calculate probabilities by dividing the difference between both parties' stats (e.g., My Accuracy vs. Opponent Evasion) by (Character Level * 15). When these formulas were originally designed, character stats were at a similar scale to character levels, functioning according to our initial design intent. However, in the current environment where Saviors' character stats have reached tens of thousands through continuous growth, the following issues have emerged: 1) Probabilities drop to 0% with a stat difference of only ~540 - In the current meta where stats reach tens of thousands, a difference of ~540 accounts for merely 2% to 3% of total stats. - However, even this slight margin can reduce an opponent's Evasion Rate or your own Critical Chance to 0%. 2) Investment efficiency drops drastically at higher stat values - While the side with lower stats can see their chance drop to 0% with just a slight deficit, the side with higher stats suffers from drastically diminished returns on investment. - For example, reaching a 50% Critical Chance requires having ~8,800 more Critical Rate than the opponent, while reaching 100% requires an excess of approximately 350,000. - Consequently, a slight initial stat lead determined match outcomes, while further investments yielded disproportionately low returns. 3) Inconsistent outcomes across stat tiers despite identical ratios My Critical Rate Opponent Critical Resistance Existing Rate After Improvement 1,000 500 19.4% 30.4% 2,000 1,000 25.0% 30.6% 10,000 5,000 42.8% 30.7% 20,000 10,000 51.7% 30.7% 40,000 20,000 60.8% 30.8% - When the difference between My Critical Rate and Opponent Critical Resistance remained at an identical 2:1 ratio across all tiers, the resulting chance under the existing formula varied drastically from 19% to 61% depending on the growth stage. - Under the new revised formula, this is adjusted to show virtually no difference across all tiers. 2. New Formula and Expected Effects To fundamentally resolve these issues, we are restructuring the probability determination method from stat "differences" to stat "ratios (division)". The newly applied formulas are as follows: Accuracy (%) = 100 / { 1 + (1/9) * ( (Opponent Evasion + 10) / (My Accuracy + 10) )² } * Level Adjustment Opponent Evasion Rate (%) = 100 - Accuracy Critical Chance (%) = 100 / { 1 + 9 * ( (Opponent Critical Resistance + 10) / (My Critical Rate + 10) )² } Block Rate (%) = 100 / { 1 + (7/3) * ( (Opponent Block Penetration + 10) / (My Block + 10) )² } Level Adjustment = 1 - (Opponent Level - My Level) / 50 (Applied only when Opponent Level is higher, minimum 0) While the formulas may appear complex, the core principle is straightforward: probabilities are determined by how many times higher your stats are relative to your opponent's (ratio). Through this overhaul, the Dev Team anticipates the following positive improvements: 1) Eliminating 0% probability outcomes My Stat Opponent Stat Difference My Evasion Rate (Existing → Improved) My Critical Chance (Existing → Improved) My Block Rate (Existing → Improved) 10,000 20,000 -10,000 0% → 2.7% 0% → 2.7% 0% → 9.7% 15,000 20,000 -5,000 0% → 5.9% 0% → 5.9% 0% → 19.4% 19,000 20,000 -1,000 0% → 9.1% 0% → 9.1% 15.0% → 27.9% 19,500 20,000 -500 0.6% → 9.6% 0.6% → 9.6% 20.6% → 28.9% 20,000 20,000 0 10.0% → 10.0% 10.0% → 10.0% 30.0% → 30.0% 20,500 20,000 +500 19.4% → 10.5% 19.4% → 10.5% 39.4% → 31.0% 21,000 20,000 +1,000 25.0% → 10.9% 25.0% → 10.9% 45.0% → 32.1% 25,000 20,000 +5,000 42.8% → 14.8% 42.8% → 14.8% 62.8% → 40.1% 30,000 20,000 +10,000 51.7% → 20.0% 51.7% → 20.0% 71.7% → 49.1% - Extreme cases where a slight stat deficit results in a 0% rate, or conversely, where a slight lead completely nullifies an opponent's evasion, will no longer occur. - When both sides have identical stats, the baseline probabilities remain unchanged: 90% Accuracy, 10% Critical Chance, and 30% Block Rate. - The calculation formula remains identical across Evasion Rate and Critical Chance, differing only in the specific stats used. 2) Fair application across all growth stages - Because probabilities are determined based on stat ratios, virtually identical probabilities will apply across all progression stages regardless of overall stat scale, whether [1,000 vs. 500] or [40,000 vs. 20,000]. 3) Tangible scaling with stat investment - Investing stats into Accuracy, Critical Rate, and Block will scale probabilities smoothly, preventing spikes or steep drop-offs across specific thresholds. 3. Additional Notes With this overhaul, players holding a significant stat advantage will see slightly lower probability values compared to before (e.g., 25,000 [Self] vs. 20,000 [Opponent]: 42.8% → 14.8%). This adjustment mitigates the extreme probability skew of the previous formula, establishing a more stable and balanced environment. Additionally, the following elements will remain unchanged: - Base probabilities when both sides have equal stats (Accuracy 90%, Critical Chance 10%, Block Rate 30%) - Accuracy adjustment based on character level difference: - The penalty reducing Accuracy when the opponent's level is higher remains active. - The Accuracy bonus applied when your level is higher than the opponent will not be applied. - Accuracy, Evasion, Critical, and Block modifiers from Cards, Buffs, and Attributes - Damage calculation formulas - Accuracy, Critical Rate, and Block calculation formulas applied to PvE content (This overhaul applies exclusively to PvP content.) The newly applied PvP formulas are scheduled to be patched in an upcoming regular maintenance. Please note that continuous monitoring and further fine-tuning may take place following the patch. This overhaul is not the final step; we will continue to listen to our Saviors' valuable feedback and address any shortcomings going forward. Notice Regarding the Damage Reduction Cap We would like to provide detailed information regarding the issue where certain boss monsters' damage appeared to increase following the recent update. While this was also guided through today's (Oct 23) temporary maintenance notice, we would like to take this opportunity to explain once again. Damage reduction effects were originally intended to cap at a maximum of 80%. However, this specification had been omitted from the live environment for an extended period, operating without a cap. While this specification was operating normally in our internal development environment, it was inadvertently applied to the live environment during the October 20 (Tue) update. As a result, Saviors perceived monster damage as having significantly increased after the update. Although we initially described this as "Fixed an issue where the damage of certain boss monsters increased" in the notice so that the symptom could be intuitively recognized, we clarify that monster stats were not buffed; rather, the previously missing damage reduction cap was reintroduced. Please note that through today's (Oct 23) temporary maintenance, we have reverted the damage reduction cap to an uncapped state, matching the previous live environment, to eliminate confusion during gameplay. The damage reduction cap will be refined to ensure fair and balanced damage calculations and will be reintroduced in a future update. The exact implementation schedule will be announced in advance through a separate notice so that you may plan your gameplay accordingly. We will continue to do our utmost to provide a fair and enjoyable combat environment that Saviors can appreciate. We apologize for the confusion caused during gameplay, and sincerely thank you for your continued love and support. Thank you.
[EDITED] Temporary Maintenance for October 22~23, 2026
Greetings, Saviors! We will conduct temporary maintenance on W, Z server due to : Fixed an issue where the damage of certain boss monsters increased. We would like to provide detailed information regarding this issue. Damage reduction effects were originally intended to cap at a maximum of 80%. However, at some point, this specification was omitted in the live environment and applied without a limit. This specification had been active in our internal development environment, and as it was applied to the live environment during the October 20 (Tue) update, Saviors experienced monster damage as having increased significantly. Therefore, while we initially guided this as "Fixed an issue where the damage of certain boss monsters increased" so that Saviors could intuitively recognize the issue, we would like to clarify that monster stats were not buffed, but rather the previously missing "Damage Reduction Cap" was reapplied. Please note that in today's temporary maintenance, we are reverting the damage reduction cap back to an uncapped state, identical to the previous live environment, to prevent further confusion during gameplay. The damage reduction cap will be refined to ensure reasonable and balanced damage calculations and will be reintroduced in a future update. The exact schedule will be announced in advance through a separate notice. Fixed an issue where the magic circle indicating the impact location was not displayed when the 'Starfall' pattern was triggered in Weekly Boss Raid. Fixed an issue where Archaeology Batch Dismantle did not proceed if the resulting items exceeded the maximum possession limit (99,999). [Maintenance Period] [KST] 10:30 to 11:30 (October 23, 2026) [EST] 20:30 to 21:30 (October 22, 2026) [SGT] 09:30 to 10:30 (October 23, 2026) The compensation for the temporary maintenance will be given to your mailbox and removed within a day. We suggest that you take them all as soon as possible. Thank you for your patience and understanding. Regards, IMC staff
[UPDATE] Temporary Maintenance for October 21, 2026
Greetings, Saviors! We will conduct temporary maintenance on W, Z server due to : Fixed an issue where the damage of certain boss monsters increased. Archaeology: Modified the tooltip from 'Increase attack against Human-type targets' to 'Increase ATK against Human-type monsters'. - This option does not apply to characters, such as in PvP. - This does not increase via the 'Attack against target of every creature type' option. Modified so that a notice message is displayed when Relic identification cannot proceed. [Maintenance Period] [KST] 16:30 to 17:30 (October 21, 2026) [EST] 02:30 to 03:30 (October 21, 2026) [SGT] 15:30 to 16:30 (October 21, 2026) The compensation for the temporary maintenance will be given to your mailbox and removed within a day. We suggest that you take them all as soon as possible. Thank you for your patience and understanding. Regards, IMC staff
[UPDATE] Scheduled Maintenance for October 19~20, 2026
Greetings, Saviors!We would like to announce the details of our weekly maintenance for (October 20, 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.
Autumn Splendor Event
Greetings, Saviors. Crisp autumn days are finally here! Soak in the vibrant colors and celebrate the season at our Autumn Splendor Event! Event Period After the scheduled maintenance on October 20, 2026 TO December 01, 2026 (KST) Who Can Participate - All saviors How to Participate Step 1. [Event] Autumn Splendor Event NPC will appear during the event period. - The locations of each NPC are as follows : Step 2. Clear Challenge/Raid Contents and defeat field monsters to receive [Event] TOS Platinum Coin! - The contents you can receive [Event] TOS Platinum Coin are as follows. Category Contents Amount Challenge Mode Challenge Mode Lv 540 Solo Challenge Mode Lv 560 Solo Challenge Mode Lv 560 Auto Match (Party) Division Singularity Lv 540 Division Singularity Lv 560 50 Goddess Raid Goddess: Brutal Ledania Lv 530 Solo Goddess: Brutal Ledania Lv 530 Auto(Normal) Goddess: Brutal Ledania Lv 530 Party(Hard) Goddess: Silent Forest Belliora Lv 540 Solo Goddess: Silent Forest Belliora Lv 540 Auto(Normal) Goddess: Silent Forest Belliora Lv 540 Party(Hard) Goddess: Silent Forest Laimara Lv 540 Solo Goddess: Silent Forest Laimara Lv 540 Auto(Normal) Goddess: Silent Forest Laimara Lv 540 Party(Hard) Goddess: Sealed Dragon's Heights Lv 550 Solo Goddess: Sealed Dragon's Heights Lv 550 Auto(Normal) Goddess: Sealed Dragon's Heights Lv 550 Party(Hard) Goddess: Wings of False Radiance Lv 560 Solo Goddess: Wings of False Radiance Lv 560 Auto(Normal) Goddess: Wings of False Radiance Lv 560 Party(Hard) Goddess: Wings of Fallen Judgement Lv 560 Solo Goddess: Wings of Fallen Judgement Lv 560 Auto(Normal) Goddess: Wings of Fallen Judgement Lv 560 Party(Hard) Field Hunt the monsters in the target field* (5%) 20 * Target Field: - EP18-1: EP18 Sventimas Exile(Lv 540), EP18 Kadumell Cliff(Lv. 540), EP18 Steel Heights (Lv.540) - EP18-2: EP18 Field of Ashes(Lv 550), EP18 Canyon of Oblivion(Lv 550) Step 3. Exchange the [Event] TOS Platinum Coins with various rewards from the Event shop! - Go to the Autumn Splendor Event NPC in each town and exchange the [Event] TOS Platinum Coins with the items below. Category Item Count Trade Property Coins Limit Special Large Golden Leaf 1 Team Storage 5 20 Special Mystic Fire Flame Earring Fragment (Bound) 1 Team Storage 350 1 Special Advanced Enchant Scroll 1 Team Storage 15 40 Special [Archaeology] Seeker's Mark Piece 1 Team Storage 5 60 Goddess [Lv.560] Advanced Goddess Ichor (Weapon) Fragment II (Bound) 1 Team Storage 100 5 Goddess [Lv.560] Advanced Goddess Ichor (Armor) Fragment II (Bound) 1 Team Storage 100 5 Goddess [Lv.560] Advanced Goddess Ichor (Weapon) Fragment (Bound) 1 Team Storage 40 10 Goddess [Lv.560] Advanced Goddess Ichor (Armor) Fragment (Bound) 1 Team Storage 40 10 Vouchers Wings of False Radiance (Auto/Solo) One Entry Voucher (Untradable) 1 Team Storage 10 15 Vouchers Wings of Fallen Judgement (Auto/Solo) One Entry Voucher (Untradable) 1 Team Storage 10 15 Vouchers Sealed Dragon's Heights (Auto/Solo) One Entry Voucher (Untradable) 1 Team Storage 10 15 Vouchers Silent Forest Belliora (Auto/Solo) One Entry Voucher (Untradable) 1 Team Storage 10 15 Vouchers Silent Forest Laimara (Auto/Solo) One Entry Voucher (Untradable) 1 Team Storage 10 15 Vouchers Brutal Ledania (Auto/Solo) One Entry Voucher (Untradable) 1 Team Storage 10 15 ETC [Lv.560] Enhance Aid (Untradable) 1 Team Storage 5 90 ETC [Lv.550] Enhance Aid (Untradable) 1 Team Storage 5 90 ETC Goddess Token (Saule): 10,000 1 Team Storage 5 60 ETC Mercenary Badge : 10,000 1 Team Storage 10 30 ETC Attribute Points 10,000 Ticket 1 Team Storage 5 60 ETC [Event] Mystic Tome 1 Team Storage 5 30 Large Golden Leaf Buff Effect: - Duration 24h - [Final Damage +3%], [HP +15,000], [Recover +150 HP/SP every 2 seconds] ※ Type "/event" to check your current coin status Important - [Event] TOS Platinum Coins can be received up to 700 Weekly. (per team) - [Event] TOS Platinum Coins can be obtained up to 4200 during the event period. - Weekly acquisition of [Event] TOS Platinum Coins resets on Monday, 6 AM (server time). - You may talk to the [Event] Autumn Splendor Event NPC until December 01, 2026 before the maintenance.
Patch Note Preview: October 19~20, 2026
Greetings, Saviors!We would like to announce the details of our weekly maintenance for (October 20, 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.
[COMPLETE] Temporary Maintenance for October 17, 2026 (Z Server Only)
Greetings, Saviors! We will conduct temporary maintenance on Z server due to server stabilization: [Maintenance Period] [EST] 08:10 to 08:20 (October 17, 2026) The compensation for the temporary maintenance will be given to your mailbox and removed within a day. We suggest that you take them all as soon as possible. Thank you for your patience and understanding. Regards, IMC staff
Known Issue: October 18, 2026
Greetings Saviors, The following issues have come to our attention: - Unable to enter the GTW Please refrain from entering the GTW Maps Please send a ticket if your character is stucked in the GTW Maps. We are currently aware of the issue and trying to fix it. If there are any updates, we will let you know through our Known issue notice. Thank you for your patience and understanding. Regards, IMC staff
Patch without Maintenance: October 13, 2026
Greetings Savior, On October 13, 2026, a patch went live on KST 18:40 due to the following changes: - The issue where the "Exploration Portal - Unseal (Wooden Chest)" mission cannot be progressed - Compensation for Archaeology Error ▶ [Archaeology] Battle Display Catalyst x3 ▶ [Archaeology] Seeker's Mark Piece x30 Please leave the current area or channel for the normal application of the patch above. Thank you.