Comet 64
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Trailers & screenshots
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About Comet 64
Comet 64 is a programming puzzle game set in 1984. You have a Comet 64 home computer and its operator's manual, and must learn how to use the machine and its assembly-like programming language.
Solve programming puzzles
Read the documentation and write programs to solve more than 50 input-output processing puzzles. You can refine your solutions to reduce their instruction and cycle counts, then compete on the leaderboards.
Explore the machine
The game also includes bonus visual, grid-based puzzles and secrets to discover about the machine.
Frequently asked questions
The best price for Comet 64 is $14.99 at Steam. It is the only shop with an offer that activates in your country.
The minimum requirements for Comet 64 are: Windows 7, 2 GB RAM, 100 MB storage. It also runs on macOS. The recommended specs are in the System requirements section.
No. Comet 64 is a single-player game.
Mostly, yes. Valve rates Comet 64 as Playable on the Steam Deck: it runs, but may need some manual setup.
Yes. Comet 64 is the full base game. You need nothing else to play it.
Steam lets publishers create keys to sell in other shops. Once you activate a key, the game is yours to keep, just like a store purchase.
Disclaimer: CD keys have an inherent 1–2% average failure rate. Check the shop terms for buyer protection info. Steam offers no buyer protection for keys bought in other shops and doesn't refund them.











