Arrowhead

The classic Gauntlet 4-player co-op action gameplay returns in a completely new experience! Battle the endless hordes of foes as you and your friends fight for treasure and glory via both local and online co-op multiplayer. (from Steam)

In Magicka, up to four players take on a grand adventure to save their world from certain doom using a fully dynamic spell system. The adventure mode takes the players across three different levels, ranging from the lush forests of mountain valleys to the frozen halls of the Mountain King where wits and creative thinking are the keys to victory.