Jumpers who teleport. A disfigured, masked Tom Cruise with a whack-job lover. Hungry raptors on the loose. These films — namely Jumper, Vanilla Sky, and Jurassic Park — all sound good, in theory. But these sci-fi stinkers, along with fourteen others, made our list of the worst in science-fiction cinema, from Vin Diesel’s character assassination in The Chronicles of Riddick to the dim-witted aliens in Signs.

Here’s your change to sound off about sci-fi flops we may have left off the list. Think the box-office bomb Battlefield Earth deserves a shout out? Have a least favorite Star Trek installment? Been itching to vent your hatred of Mars Attacks since 1996? Let us know below!