1.85KB may sound tiny, but for Tetris clones written in Asm, it's still "reasonably large".

The Hugi Size Coding Competition (unfortunately defunct now) from 2003 had a Tetris-clone competition, and the winner was 363 bytes: http://www.hugi.scene.org/compo/compoold.htm#compo22

Obligatory addition of the assembly language TetrOS in a single boot sector (512 bytes) from the author of flat assembler many years ago

https://twitter.com/grysztar/status/1054729111623606273

Real demoscene material, right there.

And to think Super Mario 64 was a whole 8MB.

People now write stuff like this for fun.

Pretty sure the original Tetris was also written in assembly because there was little choice in the matter though.

For fun, a while ago, I tried my hand at writing a Tetris clone for the C=64's 6502 (it has been quite a challenging exercise):

https://github.com/cjauvin/tetris-464

As if that's not challenging enough, recall that the game Elite [1] ran on a BBC Micro (model B), a computer that also used the 6502 yet had only 32K of RAM, half that of the C64! It still blows my mind how they were able to accomplish so much on such a limited computer! [2]

[1] https://en.wikipedia.org/wiki/Elite_(video_game)

[2] https://gdcvault.com/play/1014628/Classic-Game-Postmortem