Minor Update - 09-16-2026
- - Vyper: Slither T3 barrier duration reduced from 5s to 4s
- - Vyper: Petrifying Bola cooldown increased from 105s to 115s
Deadlock / Balance intelligence
Deadlock Vyper
Vyper stats, build items and patch history. Balance changes have receipts here.
Win rate
48.10%
Wins ÷ observed selections
Pick share
1.39%
Share of all hero selections
Observed selections
327,063
30 complete UTC days
Next nerf odds · estimate
6%
Uncalibrated entertainment model
Sample: 2026-09-17 through 2026-10-16 UTC · Normal mode, ranked + unranked, all ranks. Retrieved . Deadlock API. Observed matches only; not the entire player population. Refreshes hourly; upstream item statistics may be cached for six hours.
Daily performance
Vyper win-rate trend
0–100%09-17 → 10-16
Inspect the recordHover or focus for values · tap to pin · Esc to clear
Read chart data
- 09-17: 48.54% · 2026-09-17T00:00:00.000Z
- 09-18: 48.44% · 2026-09-18T00:00:00.000Z
- 09-19: 49.67% · 2026-09-19T00:00:00.000Z
- 09-20: 49.11% · 2026-09-20T00:00:00.000Z
- 09-21: 49.48% · 2026-09-21T00:00:00.000Z
- 09-22: 48.72% · 2026-09-22T00:00:00.000Z
- 09-23: 50.35% · 2026-09-23T00:00:00.000Z
- 09-24: 48.13% · 2026-09-24T00:00:00.000Z
- 09-25: 47.87% · 2026-09-25T00:00:00.000Z
- 09-26: 48.54% · 2026-09-26T00:00:00.000Z
- 09-27: 48.07% · 2026-09-27T00:00:00.000Z
- 09-28: 47.99% · 2026-09-28T00:00:00.000Z
- 09-29: 48.91% · 2026-09-29T00:00:00.000Z
- 09-30: 48.71% · 2026-09-30T00:00:00.000Z
- 10-01: 49.50% · 2026-10-01T00:00:00.000Z
- 10-02: 48.43% · 2026-10-02T00:00:00.000Z
- 10-03: 47.52% · 2026-10-03T00:00:00.000Z
- 10-04: 47.00% · 2026-10-04T00:00:00.000Z
- 10-05: 46.77% · 2026-10-05T00:00:00.000Z
- 10-06: 47.72% · 2026-10-06T00:00:00.000Z
- 10-07: 48.34% · 2026-10-07T00:00:00.000Z
- 10-08: 49.30% · 2026-10-08T00:00:00.000Z
- 10-09: 47.52% · 2026-10-09T00:00:00.000Z
- 10-10: 47.96% · 2026-10-10T00:00:00.000Z
- 10-11: 46.89% · 2026-10-11T00:00:00.000Z
- 10-12: 46.78% · 2026-10-12T00:00:00.000Z
- 10-13: 47.09% · 2026-10-13T00:00:00.000Z
- 10-14: 48.01% · 2026-10-14T00:00:00.000Z
- 10-15: 47.46% · 2026-10-15T00:00:00.000Z
- 10-16: 46.66% · 2026-10-16T00:00:00.000Z
Source: Deadlock API · hero-stats, UTC day
Estimate, not insider information
Will Vyper get nerfed?
Our next-balance-patch estimate increases with above-average win rate and pick share. It has not been calibrated against historical nerfs and is not a reliable forecast of Valve’s decisions.
z = −2.2 + 0.35 × (win% − 50) + 0.08 × pick share%
estimate = round(100 ÷ (1 + exp(−z)))Inputs: win 48.10%, pick share 1.39%. Minimum 1,000 observations; otherwise no reading. Patch history below is evidence, not an input to the estimate.
Build research
Vyper build items
Most observed item purchases on Vyper, not a recommended purchase order. Item win rates are affected by game length, upgrade paths and who can afford the item.
| Item | Win rate | Observations |
|---|---|---|
| Burst Fire | 49.02% | 298,368 |
| Close Quarters | 48.39% | 287,889 |
| Rapid Rounds | 48.31% | 270,598 |
| Quicksilver Reload | 49.03% | 254,571 |
| Mercurial Magnum | 51.72% | 239,150 |
| Split Shot | 48.71% | 220,114 |
| Extra Spirit | 48.06% | 218,428 |
| Bullet Lifesteal | 49.22% | 173,876 |
The paper trail
Vyper patch history
Every explicitly attributed change found in the 26 available archive entries. This is the available archive, not a claim of complete lifetime coverage. Linked-only announcements may omit change text.
Minor Update - 08-12-2026
- - Vyper: Petrifying Bola radius increased from 8m to 12m
- - Vyper: Petrifying Bola petrify duration increased from 2s to 2.2s
Minor Update - 06-30-2026
- - Vyper: Screwjab Dagger T3 now also reduces charge delay from 4s to 2s
- - Vyper: Slither T3 spirit scaling increased from 0.6 to 0.8
Gameplay Update - 05-22-2026
- - Vyper: Screwjab Dagger T2 bullet resist per stack from -5% to -6%
- - Vyper: Screwjab Dagger T3 now also increases max stacks by 2
Gameplay Update - 04-30-2026
- - Vyper: Lethal Venom cooldown increased from 24s to 28s
- - Vyper: Lethal Venom T2 increased from -8s Cooldown to -12s
- - Vyper: Lethal Venom cast range reduced from 15m to 10m and now scales with boons (0.2)
- - Vyper: Fixed Armor Piercing Rounds doing damage through Petrify
- \[ Street Brawl ]
- - Unstable Concoction reduces the players respawn time by 50%
- - Seraphim Wings damage reduced while in air reduced from 60% to 40%
- - The following abilities have -15% radius in Street Brawl: Bookwyrm, Flame Dash, Essence Bomb, Entangling Thorns, Lightning Ball, Pulse Grenade, Frost Grenade
- - Mystic Expansion Radius bonus reduced from +20% to +16%
- - Greater Expansion Radius bonus reduced from +30% to +25%
- - Enhanced Escalating Exposure: Max Stacks from +8 to +6
- - Enhanced Escalating Exposure: Amp per stack from +2 to +1.5
- - Enhanced Escalating Exposure: Base shred from +8 to +10 (matching enhanced mystic invul)
- - Fixed Enhanced Weighted Shots not maintaining the benefits from Enhanced Slowing Bullets
11-21-2025 Update
- - Vyper: Health per boon increased from 33 to 35
Shop Rework Update
- - Petrifying Bola: Debuff effect revisions to help identify targets better.
- - Petrifying Bola: Adjusted the volume of direct hits and explosion sounds.
Map Rework Update
- - Updated to use the new weapon gun audio system.
- - Updated vo - lots of new content for everyone's favorite sleazebag criminal.
- - Petrifying Bola explode and direct hit sounds updated to make it clearer when you get a direct hit.