Nice light diversion.
It's a puzzle game using a physics aspect.
You have to launch a rocket from a planet and try to collect astronauts, which in turn will open an exit wormhole.
The gravity of nearby objects like planets and black holes affects you and you have to navigate your ship by just firing your rocket to ride the gravity waves.
At the end you're awarded points for how many astronauts you rescued, how much rocket fuel you conserved and how much air (time) you spent.
There are four levels of difficulty that unlock as you progress - Easy, Medium, Hard and Insane. I think there's around 48 levels.
The graphics are quiet nice. The little rocket ship, the planets, the background space all look excellent. I didn't mind the music and never felt the urge to turn it off.
The hook to this game is the scoring system, you can finish a level no problem but each level has a high score (called the Brick Score) and you'll be trying to beat this. And man, does it get fun and annoying trying to beat that score.
You literally have to shave fractions of a second and millimeters off your trajectories to get that high score. You'll find yourself constantly tweaking your flight and rocket boosts to get that perfect score.
The game remembers your last initial rocket boost so when you start over again, you can see where you need to make adjustments.
But you don't have to get a high score to keep unlocking levels if you just want to plow through the game.
I guess the only thing that could have made this game better would have been either more levels or a lower price, but for three dollars, you can't really complain - you probably spend more on a coffee and a donut.