This is kind of a follow up to my last post, Fat Rom Hacks. Mods really are just rom hacks of modern games. Kind of.
Anyway, if you didn’t see my last post. Basically, this is a big post of easily moddable games, basically asking for some fat (or even other things, more on that later) mods. It takes into account the difficulty of modding the game, plus the potential for modding in this community.
Noita. This is a great one to mod. There’s massive modding support built into the game itself. The wiki has a lot of great tutorials and it’s fairly simple. I was going to try a hand at it myself, but it’s definitely not for lower-end computers.
Stardew Valley. This is a more popular one, but it’s a bit harder to mod. For most things, you’ll have to learn C#. But, if you just want to edit sprites, there’s Content Patcher modding, which is simpler and only involves JSON (which is way simpler than C#).
Starbound. This game’s modding community is very active, and there’s a lot of tutorials you can find around the forums. While there is a fat mod for the game on these very forums, there’s still a lot of potential, whether it be in addons or completely new mods (such as an inflation mod).
Celeste. This one doesn’t have as much as the others, but it’s there. There’s ways to edit dialogue, and there might be ways to change the sprites? I might be wrong with that one, though.
Terraria. This is a big one. I’m actually working on a Terraria fat mod right now. The community is massive, and the mod loader is now on Steam. While it’s not on 1.4 yet, they’re working on it. The modding is only slightly more complicated than Starbound, but still pretty easy.
That’s about it. If you have any suggestions for games that should go on this list, tell me, maybe I’ll add it.