For me it would be Caves of Qud. I bounced off hard, like less than an hour of playtime, before getting back into it and really enjoying it.

I think the updates to the UI and ignoring the common advice to not be a psychic right off the bat are what changed that.

Being able to see the future is absolutely busted. Being able to hijack the bodies of a high level esper hunters who also have the dominate skill is a great way to “level up” as well.