Adventure Time: Angry Betty

Betty has gone bad in the Land of Ooo. A virus has warped Ice King's girlfriend into an angry version of herself, leaving Princess Bubblegum to build a virtual-reality machine for the cure. Marceline joins the rescue, and in Adventure Time: Angry Betty, you step into that headset to enter the simulation and break the infection without hurting the real Betty inside it.

How to play?

Inside the headset, fire at the hostile Betty images that rush your position and back off when the real Betty appears, since hitting her damages the machine. Between attack waves, reload fast so your blaster doesn't click empty in the middle of a rush. From time to time, Simon and Marceline toss extra lives onto the screen, and picking them up gives you more room to survive the next barrage.