Original: Prequels and sequels The games Genso Suikogaiden Volumes 1 and 2, though not part of the main series takes place before, during and after Suikoden II as well as Suikoden Tactics which takes place before and after Suikoden IV.
Simplified: There have been five main Suikoden games made. Suikoden 1 and 2 were released on the first Playstation.