Not bad, but I loved Ether so much that a spin-off of the game doesn't really do justice.

very good but i think it would be better if you were able to upgrade spaceships as well. like the spaceships are automatically built but you have to upgrade them to make them good enough for fighting.

Not very addictive yet very fun to play. Once I figured out the best plan on how to advance through the 20 levels it lost it's repetitive fun.

'''

Erf...you removed the most important...
The spaceship you control and the "Mother ship"...
Blawgh.
Sorry man.Those 2 elements were essential to the sucess of this game.

Fun, but

The concept was fun, and the mechanics worked fine, a few small tweaks would make it more fun. For one I'd zoom the camera out slightly, or add an option for such. Then, a few more turret and enemy types would go a long way. Perhaps a few boss fights with larger spheres, or chains of them. Also, allied ship defenses, like in the last game. Would love to see an update, or sequel, keep up the good work.