100 Rogues [Free] had had a torrid history of updates, bug fix updates for those updates, then bug fix updates for those bug fix updates (which also often introduce bugs). Regardless, it's a super-fun roguelike, and even though things get broken, they've added a ton of cool things in the life of the game both for free through updates and via in-app purchase.

The developers also have a great blog that's a really entertaining read if you like seeing what game developers think of other games, as it can provide a lot of insight on design choices in their own projects. We reviewed 100 Rogues a year ago (to the day, actually) if you want to know what you're getting into before you download it. But really, despite its problems, I've still had a bunch of fun playing it, and totally recommend giving it a shot while it's free. It's even universal!