Obelisk

Obelisk Attempt to survive the hordes of enemies for 5 minutes to win. Let 3 through and you lose. It's absolutely possible to win, although victory can often be quite close! Be careful when playing upgrades (green cards) - towers can't attack while upgrading, but you'll succumb to the later waves if you don't upgrade enough! Controls Left click to pick up cards, draw cards and play cards on t…