I remember fondly playing the Scott Adams adventures on my trusty TI99/4a. He made about 12 different ones that I know of. He now has them for free download at http://www.msadams.com/downloads.htm. The games range from easy to extremely difficult. I would rank them right up there with Zork as far as story and fun.
Regards,
Brian
No thread about interactive fiction is complete without a mention of Pick Up The Phone Booth and Die.
(And once you've had fun with that, look up Pick Up The Phone Booth and Aisle.)
"There is much pleasure to be gained from useless knowledge." --Bertrand Russel (attributed)
Anyone remember "The Hermit" for the C64? If I remember right it was one of those games you program in from Compute.
My Gaming Collection (Now at Google Drive!)