Abandonware games beginning with letter O sorted by title, from Z to A

Omega is an abandoned science fiction themed strategy game developed and released by Origin Systems in 1989 for DOS, Amiga, Apple II, Atari ST, C64. Omega is a rare example of a programming game about robots.

Oligopoly is an abandoned turn-based strategy game designed by James Kerwin, developed by PC Design Associates and released by XOR Corporation in 1987 for DOS.

Obitus is a role-playing video game developed by Psygnosis and released in 1991 for various platforms including the Amiga, Atari ST, and DOS. It combines elements of role-playing games (RPGs) and action-adventure games and is set in a fantasy world.In the game, players control the protagonist who finds themselves transported to the realm of Obitus ...