

Survive to escape the horrors of Callisto and uncover the dark secrets of Jupiter’s dead moon.
Each input wears a grade, S to D, read from the buyer's side. The color is the direction: green raises the score, red lowers it, grey sits neutral. ▼ marks a dock, ? a missing input. The exact weights stay secret. These are the inputs and the direction each pushes.
Most players never reach the end. On a 10.1-hour game, that's a lot you pay for and may never use. Steam global achievements
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Skip · Shooter · 2022
SKIP IT.
Skip it at $8.99. The value isn't there.
about 10.1h$8.99 (~)
Better value than 22% of Shooter games
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The Callisto Protocol™ scores 15/100 on the BANG Score (a skip). The BANG Score rates what a game is worth for the money. Via Steam BANGERS. https://steamBANGERS.com/game/1544020/the-callisto-protocolThe BANG Score is one number for value, 0 to 100: price against how it reviews and how long it was built to be. It rates value, not taste. Whether it is for you is on you. How the score is computed → Data · updated 2h ago.
Peak 46Low 46Latest 46
Daily peak concurrent players.Player counts via SteamSpy.
Lowest price we've tracked
Low $8.99High $59.99Now $8.9985% off high
PricePrice history via IsThereAnyDeal.
The lowest price on record is $8.99, set in March 2025. It has been discounted 23 times in the 4 years tracked here, typically at 70 percent off, with about 6 weeks between sales.
Steam's global achievement data says about 3 percent of players ever finish it. On a 10.1-hour game, that is a lot of paid-for hours most people never see. It sells extras on top of the sticker price (cosmetic); the score docks it lightly for that.
No data upstream: critic score (Metacritic).