If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
The soviet AI is back! Evil corrupted masterminds have found a new way into his base, a zombie plague has started! You have to defend once more from possessions from the undead. Utilize your skill tree with your hero, use turrets and traps against the invasion!
Mouse - Build tower / Aim / Shoot hero.
W,A,S,D / Arrow Keys - Move hero.
1-5 - Hotkeys.