Nice Price Series
A short-lived series of Japanese budget PS1 games from DigiCube, similar to the Simple Series.
Palace of Deceit
A series of fantasy themed shareware adventure games by Cliff Bleszinski, similar in gameplay to his later Dare To Dream.
A series of shareware platform games by Moonlite Software, precursors to Hocus Pocus.
A loosely related series of games from Climax Entertainment that were primarily released on Sega platforms.
P.T.O.: Pacific Theater of Operations
Known as Teitoku no Ketsudan in Japan, P.T.O. is a series of strategy games by Koei that has the player determine the outcome of World War 2's Pacific Theater by capturing and maintaining naval sea ports.
A series of hidden object puzzle adventures (developed by Domini Games) with a romantic theme, largely based upon existing folklore, legends, and literature.