Cosmic Fantasy Stories ( コズミックファンタジー Stories ) is a video game developed by LaserSoft and published by Telenet exclusively for the Sega CD only in Japan on March 27th 1992.
It collects the first two games in the Cosmic Fantasy series, but with graphical, audio and gameplay enhancements over the PC-Engine originals.
Cosmic Fantasy: Bouken Shounen Yuu is given a complete rework to its gameplay, bringing it more in line with the second entry. The biggest change is allowing passive NPCs to now be fully controlled in battles. Boss battles were also made easier in this version. Some areas of the game world were completely redesigned as well.
Cosmic Fantasy 2 has similar modifications to the first title, but also makes battle encounters harder by giving enemies new techniques such as attacks that can inflict status ailments.
Source: User Summary