48. Psi-Ops: The Mindgate Conspiracy (2004)
Final Level: The Ultimate Power
Why It Sucked: So Nick gains the ultimate power, immediately loses it, regains his memories, and what looks like it's shaping up to be an awesome fight versus several attack choppers instead fades to a dreaded "TO BE CONTINUED" screen. There's no resolution here at all, and the fates of all characters involved are left up in the air.
How We Would End It: We would have loved an escape mission where you had to bring down all those helicopters.