4 stars: Update: the problem seems fixed. thanks! Game is a lot of fun, but reward ad videos don't load anymore: I can't revive or double rewards. Please fix!
4 stars: Although game is good but after playing it for about more than a month cant unlock the next ship called sentinel even after having enough coins. Also previous ship is max upgraded.
3 stars: This was a great shooter and progressively improving showing great developer support but the balance is way off for higher levels. After a change a while ago I can no longer get through a level (325) . I've got the strongest ship maxed out upgrades but it's too quick to be impossible to upgrade shooting to survive as the speed increases.
5 stars: I love this game because it is very good for relaxing and it entertains me. it's controlls are moving as fast as my finger
4 stars: no option to save game progress....I changed my phone yesterday was on level 50 now have to start all over again....
3 stars: Game punishes you for farming. If you upgrade too early the next level will innapropriately scale to your upgrades. This will leave you in a no win condition, with no more upgrades available. They made it so the next ship was unlockable on max upgrade but it no longer lets you.
3 stars: Pretty fun game, but I've encountered a weird bug. 1 hour in, ads sometimes failed to load, making revives only sometimes work. 3 hours in, they stopped running entirely, making revives impossible. Since some challenges are...