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Unravel the mystery of Serum and survive the fight against time amidst a ruined world of destruction and mutated creatures. Your life is at stake! The toxic fog obscures the dangers in an apocalyptic world where every second counts. A relentless timer on your arm decides between life and death. Prove your courage, explore the mysterious environment for resources and brew serums for unique abilities. Every dose of serum can make the difference in the fight for survival against mutated enemies. Find shelter in the chaos, search for technology and modify weapons for greater effectiveness. The race against time begins now. Will you survive?
Game modes: Single player, Multiplayer, Co-operative
Right now the lowest price for Serum we're tracking is $4.54 at Instant Gaming — 82% below Steam's $24.99. We compare 6 stores and prices refresh every few minutes.
The lowest price we've recorded for Serum is $4.54 at Instant Gaming on July 24, 2026. The current best price matches that all-time low — historically a good time to buy.
58% of 253 Steam user reviews for Serum are positive ("Mixed").
Serum released on May 23, 2024, developed by Game Island and published by Toplitz Productions.
Serum is available on PC (Microsoft Windows). It supports single player, multiplayer, co-operative.
The cheapest Serum price right now is $4.54 at Instant Gaming, 82% below the Steam price.
| Store | Discount | Price | Buy link |
|---|---|---|---|
 Instant GamingBest priceAll-time low | -84% | $4.54 | Buy Serum at Instant Gaming |
 Kinguin | — | $6.72 | Buy Serum at Kinguin |
 Gamivo | — | $6.77 | Buy Serum at Gamivo |
 YuPlay | -18% | $23.36 | Buy Serum at YuPlay |
 Steam | — | $24.99 | Buy Serum at Steam |
 GamersGate | — | $24.99 | Buy Serum at GamersGate |
All-time low: $4.54 at Instant Gaming on Jul 24, 2026 — the current best price matches it, a good time to buy.
Prices in USD, refreshed every few minutes. Switch currency on this page for EUR/GBP/BRL and more.
