but you still want it to be platform + sprite characters?
all you want to make is possible to make in JME.
- use character as sprite
http://hub.jmonkeyengine.org/groups/contribution-depot-jme3/forum/topic/spritelibrary-efficient-render-of-sprites/
- set axis only to x,y (z always 0)
- change camera frustrum/etc(or not, you decide how it should look like)
- move camera along x coord
- add nice shaders, for example cartoon filter if you need cartoon game.
- make a game
