Is "Endless" really a good idea?
The game is difficult until you figure out the right sequence of guns to buy. After that, you reach a point where you begin to be able to actually push the zombies back instead of them pushing you to the bunker. By the middle of the second day, I pretty much was able to sweep out the zombies every round with little retaliation.
I was under the thought that the "Endless" wasn't really literal but after I reached the morning of the third day, I began to think it was a possibility. The problem with that is when you've got every weapon and power-up and the zombie's aren't even a challenge any more, why bother going on? That's why I stopped for now, though I could continue mowing through the levels with hope there might be an end.
Oh, very cool how the blood, bodies, and shells stay on yet the game doesn't slow down from them.