
According to this website, there are a lot of tools for editing GBA (Game Boy Advance) games. If someone knew enough, I think they really could add in a weight gain mechanic or something. The tools available are mostly for map editing, but there is sprite editing, mechanics editing, adding completely new things, etc. This one has a massive community, with a very active website/forum. I currently know of a few games that could definitely be hacked, with tools that almost anyone could pick up. I haven’t been a part of the community of rom-hacking for a while, but that post revived my interest.

I saw a recent post, “ PMD fat rom hack?” and it gave me a few non-Pokemon related ideas, specifically for fat rom hacks for games.
