3 stars: Overall, a great bulletstorm game, but with two major flaws. 1) The game sometimes freezes and needs to be rebooted, which loses all progress on my current mission. Then I've lost half an hour, got no rewards, and need to wait for energy to refill to retry. 2) The Devs are blinded by greed, damaging the game and sabotaging themselves. They'd rather sell ad-free to one person for $38, than sell it to dozens of people for $8.
4 stars: There is a bit too much going on with all the possible upgrades and there isn't much in the way of a tutorial, but this is a very fun bullet-hell style game. The music is great, too. Ads can be completely avoided, although watching them gives you bonus abilities. If the upgrade system was a bit more straightforward, this would be a definite 5 star game!
5 stars: One of the best shooters ever. Awesome. I will say it is a bit confusing but I've figured it out. Do agree with others about needing explanation of what things are and do. It's is still one of my favorite games. Helps to play lower levels many times to upgrade your ship to conquer higher levels.
4 stars: Great game, very similar to skyforce reloaded if not copied lol. More playability in this one. Only gripe is the weapons and evolving of ships. Also, the way you upgrade is slow, really wish if i had enough tokens, coins for 30 levels i could just hit upgrade to max level vs hitting the button 30 times
4 stars: 4 stars for graphics and gameplay, lose a star because...