Dark Void. Sure, it's short and the cover-based shooting is pretty lackluster, but it gave you a freaking jetpack and let you approach the battles in any way you chose. Want to stick to cover and be boring? Go ahead? Want to get a boost to take enemies out of cover? Sure! Want to strafe enemy positions while firing machine gun rounds and rockets? Cool! If you can pick it up for 10-15 bucks, it's a fun time to be had. I certainly replayed it a few times, approaching things differently each time, using different weapon sets and tactics.
Dragon's Dogma is another great game, but for this one I'd shell out full price. I'd describe it as Dark Souls with less pure hate for the player and all they stand for, but it's more than that. It had a very interesting class system, a weight system that I actually really enjoyed toying with, and is probably the only RPG out there where selecting your character's height and build results in actual mechanical differences with strengths and weaknesses. For all of its flaws it also has great themes, mainly about the nature of free will and choice, and it's damn fun to play. The Assassin class in particular is great, eschewing the more traditional Party of Four approach for solo combat that feels like an unholy mixture of Assassin's Creed and Shadow of the Colossus. If the idea of countering and decapitating everything you see, then climbing up dragons and stabbing them in the heart doesn't sound entertaining, you need to get out more.
Spec Ops: The Line is also fairly poorly received but a discussion of that game's merits would take WAY too long. Suffice to say, if by some miracle you haven't heard of it, you should play it. Good writing and good game design needs to be encouraged.
