I've been looking through my game collection, and I've found that there are quite a few titles that were excellent games that were practically made to be continued, and yet have no sequels. So I thought I'd post them here.
Star Wars: TIE Fighter. This game was my very first experience with video games, and I'll never forget it. The amazing space-sim gameplay is still unparalleled today, and it holds the distinctive title of being one of the first games in which you play as the villain. Even Gamespot and IGN agree it's one of the best games of all time. So where's the sequel? (This goes for the X-wing series as well)
Star Trek: Bridge Commander. This game, along with Elite Force 1 and 2, proved to the world that Star Trek could be made into a playable, fun game. The game had so much promise, and yet ended so abruptly. Sequel? (Star Trek Online may have a combat system very similar to this game)
Kingdom Hearts 2. I'm still waiting for Kingdom Hearts 3. This series is just too cool to end with 2.
Star Wars: Rogue Squadron series. Yeah, Rogue Squadron 3 sucked, but the series was still pretty awesome. I'm still holding out hope that there will be a Rogue Squadron 4 someday.
So, what games do you think should have sequels?