It's fun to burn things. Different items burn different ways, so there's a bit of a fun puzzle to sustaining your fires and burning things properly, which gets you coins you can use to buy more things to burn. It's a fun gameplay loop, and there's also a bit of story as well which is darkly whimsical and quirky. It's good, most especially as mindless fun. You buy things, you burn things. You can keep going well after the game is "over", it's deeply satisfying.