In Risk of Rain, time = difficulty. The longer you play the harder it gets, do you tear through the levels as fast as you can or do you spend time collecting some of the many ability granting artifacts? With randomly generated levels, giant bosses and just one life. How far will you go?
Quite possibly my favorite game of the year. After following Risk of Rain throughout its Alpha and Beta periods, it's amazing how this fun little roguelike-like action platformer has blossomed into an expansive game that has held my attention for hours on end, and promises to continue doing so for many hours to come.