DragonSlayer (1988), by Christian Haller, Christian Weber and Roland Petermann, was a LINEL project announced for January 1989. French previews saw it as an extremely promising title by LINEL. Presentations were delayed, and its first screens were finally revealed in November 1989. While gamers' expectations were high, the game’s incessant postponements put them to the test. The project was very ambitious.

Again in 1990, French media announced the immediate release of  DragonSlayer on Amiga, Atari ST and C64, but after that there was silence. It appears that some Dragon sequences have been used in a C64 demo of Rings of Medusa (1989). A few parts from the unreleased game were later used in the follow-up Rings of Medusa Gold.

After LINEL had abandoned the project, Starbyte took over, assigned Chris Haller and Roland Petermann to the task and intended to make a Barbarian clone with the title Warrior of Darkness out of the DragonSlayer idea. But Warrior of Darkness faced the same fate at Starbyte and remained unreleased as well.

However, Christian A. Weber and Christian Haller managed to put a playable demo with a few scenes together for the Amiga CDTV. Andreas Seebeck and René Straub did additional progrmaming. Said Starbyte CD featured Warrior of Darkness and Tiebreak for the new CDTV system at CeBit 1991, a combined Data/Audio CD. And finally, Starbyte integrated a lot of material into its Rings of Medusa Gold (1994) Amiga version.

Both versions of DragonSlayer, the Linel beginning and the Starbyte version as Warrior of Darkness remained unreleased. Some of the material can be found in the archive of the French Amigamuseum, on Christian Weber’s website and on the English Amiga Board of the archive site Hall of Light.