This is the year of old browser (and/or flash) games making a comeback in some form.

It’s nice but clearly designed for desktop

It’s a mobile world. This would be so nice as a proper touch enabled game

Nice, a lot of fun!

This is kind of a cool concept. It's like Space Golfing.

Another alternative is to make it like a turn-based Scorched Earth (Mother of all games), where you can either

1. launch asteroid size projectiles across star systems in a field of stars and black holes to it each other.

2. launch projectiles that then place black holes (perhaps either by timeout or signal--taking into account the speed of light!) to change the field.

It's a good start!