(tldr: terraria in the browser here, celeste in the browser here. terraria git repository, celeste git repository) In early 2024 I came across an old post of someone running a half working copy of the game Celeste entirely in the browser. When I saw that they had never posted their work publicly, I became about as obsessed with the idea as you would expect, leading to a year long journey of bytecode hacks, runtime bugs, patch files, and horrible build systems all to create something that really ...