Zombies Can't Jump

Swarms of cute zombies are attacking, and you can't shoot them fast enough to keep them away. Your best advantage is that zombies can't jump, and you can build crates to stand on to keep out of the zombies' reach. Build yourself a defensive tower of crates, but don't forget to put down your hammer and pick up your gun when zombies get near. Even though they can't jump, they can ram into your crates and destroy them. When you kill zombies, you earn survival points. Use them to rage out and kill and build faster. Get new weapons and defenses as you go through the levels by killing all the zombies before they kill you.