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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 $6.09 at Driffle — 76% below Steam's $24.99. We compare 8 stores and prices refresh every few minutes.
The lowest price we've recorded for Serum is $4.60 at Instant Gaming on August 1, 2026. The current best price is about 32% above that low.
58% of 253 Steam user reviews for Serum are positive ("Mixed").
Serum is available on PC (Microsoft Windows). It supports single player, multiplayer, co-operative.
Serum last hit a new low of $4.60 on August 1, 2026 at Instant Gaming. Current best price is $6.09. Prices on this page refresh every few minutes, so check back around seasonal sales for new lows.
The cheapest Serum price right now is $6.09 at Driffle, 76% below the Steam price.
| Store | Discount | Price | Buy link |
|---|---|---|---|
 DriffleBest price | — | $6.09 | Buy Serum at Driffle |
 Kinguin | — | $6.20 | Buy Serum at Kinguin |
 Gamivo | — | $6.36 | Buy Serum at Gamivo |
 Loaded | -80% | $6.79 | Buy Serum at Loaded |
 Instant Gaming | -76% | $6.99 | Buy Serum at Instant Gaming |
 YuPlay | -18% | $23.50 | Buy Serum at YuPlay |
All-time low: $4.60 at Instant Gaming on Aug 1, 2026 — the current best price is 32% above it.
Prices in USD, refreshed every few minutes. Switch currency on this page for EUR/GBP/BRL and more.
