This game is fun but there are so many issues with the game mechanics and design that I have to say to pass on this game (at least until the devs decide to address the issues). Please keep in mind I've only played campaign Pros: Game is kinda fun, and there is some satisfaction to beating a level. That's it. Cons: - If you let even 1 zombie through, you get a snowball effect where your entire base is wiped out in a minute. Best part? You're going to be zoomed out managing everything so you wont even realize your base is under attack until you've lost a few structures - No restart option while playing. Screw up somewhere and you get to sit and watch as your base is overrun before you can restart. - No in-game saves, so don't even think about playing and taking a break. - Poor in-game design of levels and start up. Fighting units take forever to get because you're wasting resources trying to build defenses and get your population up. - In-game tech tree is pretty pathetic because there is no re-spec option. Pick a tech that sucks or maybe a unit that needs resources not on your map? Tough luck loser, you're stuck with it. Good luck in the next mission! - Game genuinely feels hard because of poor game design. Thats definitely not a good thing. There's just so many dumb design choices that I cannot recommend this game. Its baffling that a game like this is always over 20 bucks but plays poorly. Only pick up this game if its on sale or you like artificial difficulty.