Is there anything more simultaneously exciting and frustrating than a video game that leaves you immediately wanting for a sequel? Many classic games will simply be closed-off one-shots, but given that gaming is a commercial enterprise after all, most games these days tend to sew in a sequel-baiting tease just in case the game is a success enough to warrant said sequel. This can appear by way of a blatant cliffhanger, or simply an open-ended climax which leaves plenty left to explore. It's all well and good when these sequels are made good upon and, if the follow-up is a hit, then everyone's happy. But what about when, for reasons usually relating to finances, a sequel is never made, and gamers the world over are left lamenting a conclusion that never was? These 11 games all very clearly implied a sequel was on the way, but to date gamers have been left hoping for a surprise announcement which, let's face it, probably isn't going to come. With villains miraculously rising out of the ashes, our heroes being thrown into the line of fire, and every ambiguous ending in-between, these games have left their fans agonising about what happened next ever since. It's such a frequent occurrence these days that you'll no doubt have your own suggestions, so feel free to discuss them in the comments! And beware, as massive spoilers for several big games lie ahead!