This is a special High detail release.
In the regular release the sprites and textures are lowered in detail to save memory. That way more graphics can be hold in memory, which is good for performance. For sprites every odd column is removed and for textures 3 out of every 4 columns are removed.
This release features the regular high detail sprites and textures.
The zip contains the 240x128 256 color Mode 13h and Mode Y 286 builds.