Although the game is owned by Microsoft, it looks like an Indie game. It's been updated for years, but there are no noticeable changes. The biggest problem with the game is that it doesn't have a story with a cinematic presentation that can be followed. The game was made entirely for online purposes. The only objective is to build a base and then defend it against zombies after upgrading it. When you play alone it gets boring and repetitive very fast. There's really nothing to do in the game because everything feels pointless. The game only looks good as an idea on paper. They didn't have the budget to really develop it, so as a real game they couldn't really make it reflect the way it should. What I'm most curious about is the budget of this game. I've seen much better work come out of indie games developed with Kickstarter donations. Not only do they not care enough to allocate a budget for this series, but they've been releasing updates and trying to improve it for years. The contradiction the developers are in seems funny now. I don't know how the third game will be, but it's sure to feel very dated compared to the year it was released.