One Girl, by dr khel (2001)
(13 ratings)

Only War - Warhammer 40.000: The Text Adventure by Simon Christiansen 2021 (6 ratings)

Open That Vein by Chandler Groover 2015 (14 ratings)

The Origin of Madame Time by Mathbrush 2018 (19 ratings)

Oth., by Gunther Schmidl (2002)
(4 ratings)

Panoptique by Hugo Labrande, Nighten Dushi 2019 (2 ratings)

Paranoia, by Sam Shirley (1987)
(3 ratings)

Parlez-lui d'amour by Auraes 2022

Pathway to Destruction by Richard Otter 2005 (7 ratings)

Pegasus by Michael Kielstra 2018 (10 ratings)

Pentari: First Light by Howard Sherman 2004 (1 rating)

Perseus and Andromeda by Brian Howarth 1983 (2 ratings)

Petit Gnome by Eric Forgeot 2006

Photopia by Adam Cadre 1998 (529 ratings)

Pick Up The Phone Booth And Die, by Rob Noyes (1996)
(106 ratings)

Pirates and Ninjas and Aliens, Oh My!, by John Cater (2003)
(3 ratings)

Pogoman GO! by Jack Welch and Ben Collins-Sussman 2016 (23 ratings)

Polendina, by Christopher Lewis (2006)
(8 ratings)

Pollo y Camino, by Jay Goemmer (1998)
(3 ratings)

Primer by Christina Nordlander 2017 (6 ratings)