
Publisher: EastAsiaSoft · Release date: 2026-06-24
The cheapest Rat Protocol key that activates in the UK has a listed price of £3.99 at PlayStation Store (PS4, UNITED KINGDOM key). Checked .
Weird science and block-pushing puzzle mechanics combine for a brainteasing adventure in Rat Protocol! When an experiment unexpectedly grants humanoid strength and intelligence to a lab rat, the scientists in charge decide to test the limits of their creation’s newfound abilities. Guide the lab rat through increasingly tricky chambers by pushing crates, blocking dangerous laser beams, activating switches and detonating explosives. Find the right order to clear obstacles so the lab rat can reach key cards to open doorways and proceed to the next test. Will you make the experiment a success or lead your rodent to an untimely demise? • Test the limits of a mutated lab rat in top-down puzzle adventure style! • Solve increasingly complex puzzles to escape each tricky chamber. • Avoid hazards and collect key cards to help the lab rat survive! • Block laser beams, activate switches, push crates and more in the correct order. • Enjoy retro pixel art aesthetics and a whimsical narrative about twisted science! This product entitles you to download both the digital PS4® version and the digital PS5® version of this game.
Prices last checked . Each is the price the store lists; marketplaces add a service fee at checkout.
No. PlayStation Store sells it for £3.99, the lowest price we track in the UK.
The lowest price we recorded for Rat Protocol in the last 30 days, counting keys for every region, was £3.99. The lowest listed price for a key that activates in the UK is £3.99 today.
Not always. Stores that sell their own keys, such as Steam and GOG, add no service fee, though sales tax is added at checkout in the US and Canada. Marketplaces add a service fee at checkout, and some payment methods add their own, so on a marketplace the total at checkout will be higher than the price listed here.
Official stores sell their own keys. Marketplaces and third-party sellers sell keys from other sellers: check the seller and the key’s region before you buy, and pay through the store’s own checkout.
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