Nightmare Run is live: clear the hardest difficulty and hold the line

Nightmare Run is live! Easy and Hard were the warm-up - this event is about the difficulty that punishes every gap in your line. Take your strongest builds into Nightmare, where the swarm hits denser and leaves you far less room to recover a bad opening. Evolve your towers with intent, save your ultimates for the exact moment the field floods, and clear as many Nightmare maps as you can before the run ends. Finish it to claim limited-time rewards.