I got Immortal Planet on GOG, since I just loved the clean look of the thing. I don’t usually go for “Souls-like” games, but this seems pretty easy to get in to. You do have to grind (that first boss was quite the suprise!), but it’s fun and plays well, with your character turning at 90 degree angles (can still move in any direction). Controls are responsive, the setting is interesting (a planet of immortals, where they revere the Mortals who wrote scripture, etc.), the music/sounds are great and moody, and the vector-like graphics are great. I especially appreciate how nicely things are animated, and the writing is solid.
I’ve only put in a couple of hours so far, but I recommend it at this point.