Blow 'Em Away in Risk of Rain 2 with Steven!

Risk of Rain 2 is quite a game.

With its cell-shaded design and rogue-like gameplay, it will always keep the session fresh with currently playable characters being Commando, Mercenary, Artificer, Rex, Huntress, Engineer, MUL-T, and Loader. With more characters on the way and even more stages and bosses/enemies there is always something to do in the game. 

Each run has randomized loot and stages with all the chests spawning in random locations. There are normal items and "Lunar" items. Lunar items are always powerful, but they always have a catch to them. You can earn items by finding them in the world and doing challenges. With up to 4 players, there will be more enemies and loot per added player, but nobody shares loot, so trying to balance out the items can be tricky. Also if a player dies, they will be unable to be revived until the next stage, and each stage the difficulty will increase by a large amount, while the difficulty always slowly increases the longer you live. 
So if you choose to play with friends, be careful that they do not loot-ninja all your gear.