High difficulty spikes can be frustrating for casual players. Score: 8/10
Try “Just One Boss” (space-themed wave-like fights) or “Biters” on unblocked sites — not pure space wave, but similar dodging & wave challenge. space wave game unblocked
Reach the end of the level without crashing into walls, rotating gears, or sharp spikes. High difficulty spikes can be frustrating for casual players