Random enemy spaceships is great feature, but later on they all become square - biological chaotic shapes would be more interesting. Use a cell apparatus in generation? 4/5 cause I'd like to see part 2 :)
Linear heroes, quadratic enemies. If the enemy progression curve was less extreme, or the heroes progression more multi-faceted, the game could get more than 2/5 from me.
Cannons don't work at all - they deal no damage. This I say after some comprehensive testing (made to 89 lvl). Tower turn rates do not accelerate sufficiently, so the faster game runs, the less effective towers are... How sloppy can you get? 1 star.
Financial wonders and buildings are substantially more powerful than others, eg. Adam Smith would give me twice the science of Newton if I used the gained gold to buy science.
I like the game, and it is refreshing to discover these unique races and their diverse journeys from caveman to cosmos, on three different planets. The mechanics are sound and the game is for the most part rewarding. What is bad, is the repetition of items, projects and especially, wonders, between races in ages 5 and 6 was an unpleasant surprise. Especially since ages 1-4 are far more imaginative. Which is puzzling as all that was needed was unique name and function, images do not repeat anyway. Does imagination end when faced with future?
The concept of airstrikes is great. Some achievements require perhaps too much grind (recycling center? I wouldn't build any normally), but otherwise 5/5.
Pros: Great game concept, the freeform fotress building is much more exciting than a typical tower defense.
Cons: Uninspired units that differ very little from each other, which causes the game to become very repetitive once you have laid out the general defense plans. Planning is fun, playing the levels is quite dull (lack of new options, just simple upgrades and repairs).
Overall 3/5 - it could've been great if it had more diverse options, though.
Good, addictive game, but it needs fleshing out. The engine is robust and the gameplay is fun, but things improving the graphics, making the character mode customizable and introducing more skills and generally more to do/buy/upgrade/achieve could make a good game into a great one. For now, 4/5.
Thanks for your feedback! The bug with immortal tank is fixed.