Tbf, you can also ship WASM games in kilobytes. E.g. here's a Pacman clone written in C99 in "46.8 kB transferred" (107 KBytes uncompressed size):

https://floooh.github.io/pacman.c/pacman.html

...can probably be made quite a bit smaller when 'as-small-as-possible' is the main goal.