Here are five games that we're planned, and some have even been in production, but have never been completed. I know that there are more games than this that were never finished and that many people would love to have played, but these are some of the names that come to mind that I have heard people on these forums mention.
Sam & Max: Freelance Police
A sequel to the popular point-and-click adventure game 'Sam & Max: Hit The Road', LucasArts began development on 'Freelance Police' in 2002. Lead developer Michael Stemmle collaborated with creator of Sam & Max Steve Purcell, who assisted in plot development and led artistic direction. The game would contain 19 mini-games and, according to Stemmle, would be composed of six small stories that would be held together by an über-plot. The game would be in 3D and would feature the classic point-and-click interface. The game's development was powering along before it was suddenly canceled by the monkeys running (or should I say ruining?) LucasArts at the time. After the game's cancellation, Purcell gave his views on the decision:
"LucasArts' sudden decision to stop production on Sam & Max is mystifying. Sam & Max was on schedule and coming together beautifully. I couldn't have been more pleased with the quality of the writing, gameplay, hilarious animation and the gorgeous 3D world that Mike Stemmle's team has created. The rug has been pulled out from under this brilliant team who've so expertly retooled Sam & Max for the 21st century. I'm extremely frustrated and disappointed especially for the team who have devoted so much effort and creativity to Sam & Max. It's a shame to think that their accomplishments, as well as the goodwill that has been growing in the gaming press toward this project, will all go to waste due to this shortsighted decision."
Full Throttle: Payback
LucasArts began production on this game in 2000. Schafer had left the company by this time, so Larry Ahern took the role of the project leader with Bill Tiller as the art director. The game's story involved Ben Throttle - the game's main and playable character - aiming to foil the plan of a large corporation and the local governor who planned to replace all stretches of paved highways with hover pads; a plan that didn't sit well with the bikers and truckers. Ben would apparently prevent an assassination on Father Torque - the leader of the anti-hovercraft rally - before teaming up with a "persistent undercover female reporter" to bring down the villainous governor. The game would apparently include dozens of new locations. 25% of the levels and 40% of the pre-production artwork of Payback were completed before the project ceased in November of 2000. While no official statement was given, Tiller later said that the project fell apart due to "a major difference of opinion between the team and a particularly influential person, who didn't like the direction we were going. And in the end those differences could not be resolved".
Insecticide Part 2
Insecticide is an adventure/action/platformer game by Crackpot Entertainment. The game was created and designed by ex-LucasArts employees Mike Levine and Larry Ahern as well as Josh Mandel of Sierra Entertainment. The game takes place in a city named Troy, in a world where insects have evolved and become the 'dominant race' while humans have devolved into pathetic creatures living on the outskirts of cities. The story follows protagonist Detective Chrys Liszt and her veteran partner Detective Roachy Caruthers who are currently on their latest, biggest and most mysterious case. Insecticide was originally planned as a two-part episodic game which was to be published by Gamecock Media Group. The first episode was released and distributed digitally with the second episode well into production. Unfortunately Gamecock was acquired by Southpeak games in 2008 and, with the company having no intentions of releasing 'Part 2', it was never released. Insecticide currently only exists in its full form on the Nintendo DS, but it's a rather large downgrade from the PC version.
Duke Nukem Forever
Eh... no... please don't make me...
Ron Gilbert's Monkey Island 3
Ron Gilbert was, of course, the creator of Monkey Island, the Monkey Island world and all of the characters (from the first two games). He was the lead designer of The Secret of Monkey Island and LeChuck's Revenge. LeChuck's Revenge ended with some rather big cliffhangers and left the players with many unanswered questions; questions that were to be answered in the third Monkey Island game of what was to be a trilogy of MI games. But Ron left LucasArts before he could create the third game and LucasArts instead released Curse of Monkey Island which didn't exactly answer the questions at all. No, Ron Gilbert's MI3 was never in production, but Gilbert has stated that he has the storyline in his head and that he did write a brief storyline at one point.
So, which of these games would you have most liked to have seen finished and released and on your shelf as we speak?
Edit: The title of this thread should probably say "Which One of These Games Would You Have Most Liked to Have Seen Eventuate?", as it doesn't exactly make much sense in its existing form.