3 stars: I never rate games after 1 day but am doing so now in the hope that it will stop the harassment to rate it. Would have rated it higher if not for that and the obvious money grabbing. The game is fun but would be much more so without the constant attempts to get more money. I'm honestly thinking of deleting it after less then a day and I like these types of games.
4 stars: LOTS of opt-in ads. Energy mechanism to gain permission to play the game for some reason. Otherwise, great graphics, controls, and gameplay so far. I've beaten 10 levels and it's getting pretty insistent that I rate the game. Here's hoping this works to stop that.
5 stars: The ways to power up are endless and can be a bit confusing, but still like I say endless ways and never stops getting interesting so far so good
5 stars: Been playing for a few weeks now. Still love the gameplay and ability to keep advancing stages as well as the lvl of the ship and weapons with ftp. Really enjoy the sound. Soothing. Thanks to the developers for creating a great game.
5 stars: Can tolerate the ads. Not bad compared to most. But as a drummer I love the background music. Don't often hear a music loop that long. Gonna memorize the whole thing note for note and just put the tablet down and practice the drum part on my coffee table when I get pissed at the game. Seriously, it's therapeutic...
5 stars: As long as you do not want to finish in a couple days this is a good game. You can use freely earn...