A game of rage and traps
and it's free on PC
spelunkyworld.com/
You play as a indiana jones kind of character and have to repeatedly descend while fighting monsters and collecting treasure, but if you die... you start over xD
Check it out Pewdie
Don't let the rage get to you though
P.S. it's also on the XBOX 360 with multiplayer and better graphics, but not free
Also the levels are completely randomly generated which adds to the difficulty

spelunkyworld.com/
You play as a indiana jones kind of character and have to repeatedly descend while fighting monsters and collecting treasure, but if you die... you start over xD
Check it out Pewdie

P.S. it's also on the XBOX 360 with multiplayer and better graphics, but not free
Also the levels are completely randomly generated which adds to the difficulty

Peace is Possible