http://www.polygon.com/2015/3/9/8160041/jumping-flash-on-morpheus
Jumping Flash is so great because when you jump you can actually see where you're landing. A lot of platformers - even Mario - this is not the case many times so it's harder to land. Jumping Flash I thought was the perfect solution for 3D platformers in terms of its vertical design. A Jumping Flash on the Morpheus would be the killer app for me.
What would be the killer app for you for Morpheus?