This compilation is the second SEGA AGES 2500 release from the Fantasy Zone series. It contains a collection of every game in the series as well as two never-before released games.
The main attraction is the new System 16 version of Fantasy Zone II, a newly-made 16-bit re-imagining of the original Master System game, actually programmed for the original System 16 hardware (via emulation). This reworking is a rather loose interpretation of the original game, billed as a "concept remake," culling elements of Fantasy Zone 1 and 2 and blending them with original elements to answer the question "What if Fantasy Zone II was developed for the arcade by the original AM team instead of for the Sega Master System by the R&D team."
The games included in the package are:
Fantasy Zone - the original System 16 version (four different revisions) and the Mark III conversion (two revisions)
All games include a variety of display options, and the Mark III/Master System games have the option to switch between PSG and FM sound modules. Also included is a mysterious game called Fantasy Zone: Neo Classic produced by Sunsoft, and which seems to be based on the Famicom conversion of the game.
The Famicom, PC Engine, and MSX conversions of the games are not included, nor are the earlier SEGA AGES 2500 remake of the original game and the elusive Space Fantasy Zone prototype.