The idea is simple - position scrambled planets to create a stable solar system. All the physics are computed and handled in real scales and units, so it is actually a quasi-realistic solar system simulator

The levels are auto-generated in 3 difficulties. Intended for a desktop and mobile (I've been actually playing it on my Android phone

).
Info about controls and further details are written on the following page (below the game):
PLAY: [ www.jarnik.com/pub/planets/v01 ]The first version gave you no clues whatsoever to find a working solution (no helper grids, no colored stars - all just white) and with realistic physic, it was hard beyond fun.
I definitely want to keep the realistic physics. So to make it a bit easier, I'm thinking about the following model:
gather stars as a credit for using science power tools - color stars (match stars to a planet), sparser grid (less possible positions for a planet - easier), estimated area (a range in which planet should be placed)...
What are your thoughts on:
- controls and gameplay?
- do you know of any similar games? I'd hate to get close to an existing game
- ideas to spice up the gamplay
Thanks!