The mechanics here are pretty fun! It took me a little while to recognize the details (max discs = 4;  you can build off of other discs (and the car); throwing too close to a zombie will kill you; discs eventually break; you really do need to build a fortress for later waves) but they work well together.

I also kinda love that the leading cause of death in this game is literally walking into something that's just laying there on the floor. I'm not sure the zombies ever got me, except by getting so close that the disc landed on top of me.