Take a look at Arcen Games' output. Quirky, unconventional and, at times, unpolished, but they're little gems in the rough.
A Valley Without Wind 2 is a particularly interesting title, combining a turn-based strategy game with platforming combat, magic spells and character progression. I'm a big fan.
More recently released, The Last Federation is a 4X game in which you don't build your own empire, you instead interfere with several other empires in an attempt to eventually unite them all under your own banner. Oh, and you're a Hydra. And there's turn-based bullet hell combat. It's as strange as it sounds -- and I'll note here that I haven't played it myself yet -- but it sounds like a blast.
