I got this for 49 cents, and there are trading cards you can sell, making it even cheaper. That being said, I still regret this purchase. It isn't even worth a quarter.
Some say it's like Angry Birds Space. It's not. It's far, far worse. I love Angry Birds, and this game is nothing like it. You can't destroy anything. The whole point of the game is to grab three coin star things, then get to the warp hole/exit. It's not really an enjoyable process either. Many of the levels you can get immediately, because they're so easy. Some others are so annoyingly hard to find the sweet spot. It's basically just tweaking your shot, little bit little, trying to find that one sweet spot where you win the level. It's barely even a game really. More like a meticulous painful process of guess work.
The camera is annoying. It starts zoomed in, and as you pull the mouse back to launch, if you tough the edge of the screen, it zooms out more. Most levels require zooming out, and every time you restart, it zooms back in. This means you have to use the annoying edge zoom EVERY time you try again. It's aggrivating.
It DESPERATELY needs a restart button, like the "R" key or something. You do get three lives, but it's pointless, because you obviously want to get three stars. So you end up clicking pause, then reset, then resetting the annoying camera again... over, and over, and over, and over... until you find that one sweet spot where it works.
On top of all that, it's a physics gravity type game, and the physics don't even really make too much sense. Sometimes a planet will do a lot, sometimes barely anything. The size appears to be important at times, and totally irrelevant other times.
I've played the game about an hour as of now (to get all the badges... not because it's good). I'm about half way through the game. There's a badge where you have to play the game 10 hours... there's no way this is a ten hour game. I'm just going to be leaving it on while I do other things, for the sake of getting that badge.
If I were you, the only way I would get this game is if it were free, so that I could get the trading cards and sell them.