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 to games/pc/ccr.zip and to 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 to games/pc/legend386.zip and to games/tads/legend386.zip]
Source code for above. [file is linked to games/source/tads/legndsrc.zip]
The Horror of Rylvania by D. A. Leary. Playable DEMO v1.0 [file is linked to games/pc/rylvania.zip]
Unnkulian Underworld: The Unknown Unventure version 3.0 by D. A. Leary. [file is linked to games/pc/unnk1v30.zip]
Unnkulian Unventure II: The Secret of Acme version 3.0 by David M. Baggett. [file is linked to 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 to games/pc/unnkhz10.zip]