Infocom
Infocom released these text adventure games for the TI-99:
- Zork I: The Great Underground Empire
- Zork II: The Wizard of Frobozz
- Zork III: The Dungeon Master
- Enchanter
- Sorcerer
- Deadline
- Starcross
- Suspended
- The Witness
- Infidel
- Cutthroats
- The Hitch-Hiker's Guide to the Galaxy
Asgard Software
- Ballyhoo
- Hollywood Hijinx
- Leather Goddesses of Phobos
- Spellbreaker
- Suspect
- Wishbringer