Game Island · Toplitz Productions
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Dive into a thrilling survival adventure where an unknown liquid takes control of your life. Extract Serum to stay alive, battle dangerous creatures, solve puzzles, and uncover clues about past events.
| Date observed | Region | Final price | Regular price | Discount |
|---|---|---|---|---|
| US · USD | $24.99 | $24.99 | — |
Greetings Survivors! The Toplitz Productions Sale Publisher starts today – and we offer discounts with our titles! Time to winterise your survival game collection! Now is the perfect opportunity to grab Serum with 60% discount Or some of our other games? Or surprise your friends
Dear players, friends, citizens! Welcome to our "Back to School" sale where we celebrate games that make both learning and teaching a breeze! Grab your hammers, sharpen your blades and charge into epic adventures – now at unbeatable discounts! Don’t miss your chance to expand you
Greetings Survivors! The Steam Summer Sale starts today and we`re participating in it! Grab our games with discounts up to 80%! The Summer Sale starts 26 June 2025, 7 pm CEST and lasts until 10 July 2025, 7 pm CEST! Serum: Toxic Survival is 50% off!