A dungeon crawler. About 3 friends and their quest for an unknown treasure. Developed by ManyHat for 1-2 players. Requirements: You will need a DX11 supported graphics card to play!
This game makes a good introduction to ARPG games for non-fans.
I played through with my dad and we had fun. The classes are different enough to feel unique, and the graphics and music are nice. There's essentially no depth to levelling: stats are boosted automatically when you level up, and by finding new gear in chests or from bosses.
There's a couple of bugs, notably when trying to pick up new weapons as the mage (at least in co-op), where the prompt doesn't show up, but it's not game-breaking.
It's a short game, and can be beaten in under an hour, but the levels are nicely designed and there's secrets to be found. Good for some mindless fun with a friend.