Concept is very good, but the game is really buggy.
-Sometimes when you click a tree and select to chop it, it gives the command and then immediately cancels it. Only reloading the page helps.
-Playing two games in a row is impossible, the zombots become invulnerable.
-When building something, the gobot starts building it, but you need to order it again to complete the building. I don't know if it's a bug or poor user interface planning.
-In upgrade section the price of fight upgrade is specified, but speed isn't.
-Sometimes when you chop down a tree, you don't receive any wood for it.
I'll be glad to try this again after some major bugfixes. :)