Absolutely love the concept but, like most, I hit a lot of snags. No NV, zombies too fast and strong, not all controls super clear. I think a *big* issue is its too dark. I know that's the point (hence NV), but I can't even see the tank when i'm standing directly in front of yet, let alone broken treads that I need to fix. Hope you keep working on this because i'd *love* to try a more functional version.