why pay?
I enjoy playing the game but after 18 levels you are forced to pay to play the game more
it's Trial-ware; not free.
In app purchase necessary to continue, even if you don't want to go futher and just replay 1st level (as for kids maybe). Most shareware offers some free fun, but pay for more advanced. This is free to try, but after 18 shots, locks you out.
Good but hungry for money
The whole game up to level 18 is fun but there is no point in downloading just to find out you have to pay to play on so I don’t recommend downloading
Elegant design. Very satisfying.
An endless app with many small satisfactions.
Endless play
Uh oh I could play this forever. The planets are so pretty and the haptics are so soothing and I just want to get my score to par
