I made this app using jPCT-AE. Not sure if I would call it a "game", as it doesn't involve any goal other than simulating the trajectories of planets and spaceships. The app is focused on realism rather than gameplay.

Here's a link to the free version:
https://play.google.com/store/apps/details?id=gpaw.projects.space.spaceflightLite

And here's the full version:
https://play.google.com/store/apps/details?id=gpaw.projects.space.spaceflight

Hope you enjoy it!