10. Heart Of Darkness (1998)
Development Time: 6 Years (1992 to 1998)
Heart of Darkness is a cinematic platformer from Amazing Studio, which was released in 1998 for the PlayStation. The game features a young boy who tracks his missing dog after it was kidnapped by ghosts. The story plays out over the course of 90 minutes of interactive storytelling cinematics.
The game was relatively advanced for its time, but that wasn't the main reason it languished in development for more than six years. When development began in 1992, Heart of Darkness was targeted for release on the PC market, but the platform became an issue soon after development began.
Work was done on the game for a few years before it was finally announced to the public for the first time in 1995 at the European Computer Trade Show. At the time, it was revealed to be coming out on the 3DO Interactive Multiplayer, but thanks to taking so long for development, that wasn't a possibility.
By the time development neared completion, the 3DO was no longer commercially viable. This pushed development for release on the Amiga CD32, but that version was never released. Eventually, it was developed for the Atari Jaguar CD, but further delays in development made that an impossibility. By the time development was completed, it was finally made available on the PlayStation.