Colossal Cave Revisited v1.0. Crowther and Woods' classic adventure with a full sentence parser. Comes with source. TADS version by Dave Baggett. [file is linked from games/pc/ccr.zip and from games/source/tads/ccr.zip]
The Legend Lives! v1.0 An Unnkulian Universe Unventure by David Baggett. 386SX or later CPU required. [file is linked from games/pc/legend386.zip and from games/tads/legend386.zip]
Source code for The Legend Lives! by David Baggett. [file is linked from games/source/tads/legndsrc.zip]
The Horror of Rylvania, by D. A. Leary. Playable DEMO v1.0. (for the full version see games/adventions/adventions.zip) [file is linked from games/pc/rylvania.zip]
Unnkulian Underworld: The Unknown Unventure, by D. A. Leary. Version 3.0. [file is linked from games/pc/unnk1v30.zip]
Unnkulian Unventure II: The Secret of Acme, by David M. Baggett. Version 3.0. [file is linked from games/pc/unnk2v30.zip]
Unnkulia One-Half: The Salesman Triumphant, AND Unnkulia Zero: The Search for Amanda (playable demo). Both are version 1.0, by D. A. Leary. [file is linked from games/pc/unnkhz10.zip]