Wow. 50 games. Now I'm ashamed of my list of 10! You've got a few on here that should have at least made my "honorable mention" list for my top 10. Betrayal at Krondor, Tie fighter, Might and Magic (I'd go with 4 and 5, the Xeen games). I'm glad to see someone else still hopes for a Masters of Magic sequel all these years later.
Always good to see typed-up descriptions. Helps makes these lists more personalized.
I've been wanting do to one of these for a long time now, but the games are too many and the time is too little... :( Maybe when I'm finally able to take a real vacation I'll get my hands on doing so.
Anyway, you've got some really good games there, and definitely some will also be on my (future) list :)