Definitely gonna pick up Ziggurat sometime this year, looks like a combination of Issac and Tower of Guns.
Yep, it really is. It's an arena shooter with RPG/Roguelike trappings. Made it onto my GOTY list for last year I enjoyed it so much. It's nowhere near as deep (or perhaps obtuse) as Isaac, but I liked it for that. As others have said, perfect podcast game.
Good to see it getting some love in here, as I think it was woefully overlooked last year.