Comet 64

1984, february.
outside, it's dark. -and raining.
it might have started five minutes or five days ago.
hard to tell.
I've been coding.
if I stare at the screen long enough
answers come to me.
that's my super power.
outside, the city is sleeping.
but the caret is blinking at me.
and this new disk I got,
it's brutal.

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Comet 64 is a programming puzzle game. The year is 1984. All you got is a Comet
64 home computer and the operator's manual it came with.

• Read the documentation (exists both in-game, and as a pdf) and figure out how
  to operate this 80s computer.
• Learn its assembly-like (but not quite) programming language.
• Solve 50+ input - output processing puzzles.
• Improve your solution and minimize your instruction and cycle counts to compete
  in the Leaderboards.
• Solve bonus visual grid-based puzzles.
• Discover secrets? of the machine.

Source: Steam Store Description