Played it a lot in the beginning, the graphics is interesting, but the game is not free as you can't play it forever for free. after some time there is an unresolvable problem: the base can't be upgraded without paying some Kreds. Also if you upgrade the volocity of units to the max they get crazy and rotate all over the map. Lost interest in playing it.
BR.
 "Monster Clearer"){kind=icon}
 "Atomic Strike"){kind=icon}
Try with another browser, mozilla for example