What's the most fun game that takes the least amount of space?

1K ZX Chess for the ZX81.

1K ZX Chess's code takes up only 672 bytes in memory

I sorted all my NES emulations by size, and I think this is the coolest one near the bottom:

https://dustmop.itch.io/the-witnes

Rhino Hero.

But that’s a physical box, not megabytes.

tetris gameboy is def my vote

https://www.youtube.com/watch?v=_-_xK8GhMiQ

This little scorched earth type beauty was something me and friends battered the hell out of. I can't confirm the size, but judging by the few sprites and simple gameplay it ain't that big. But tons of fun.

Commodore Amiga btw

Snake II for the Nokia 6310i (with a generous 30kb for OS and everything else) deserves a mention just for being so addictive

this is only 96k! https://m.youtube.com/watch?v=2NBG-sKFaB0

xp yep big fan of tanx. "oooooh now he can't be too happy with that one!"

Not as small as some of these, but Cool Edit 96

I like this entry in this 13K js game competition
https://js13kgames.com/games/choch/index.html

https://thumbs.gfycat.com/WanWeeklyBee-small.gif

I wonder what's the smallest game in the current era that was pressed onto physical media.

apparently sekiro was notably small in filesize, but no idea what would actually be the smallest

there's often limited edition physical media runs of small indie games so Kero Blaster at 20mb is very likely the winner on PS4
https://limitedrungames.com/products/limited-run-130-kero-blaster-ps4