Short facts:

- 6 Stages

- 4 Game modes: Novice/Original/Maniac/Omake

- Elaborate scoring systems

- 40+ Fully animated CGI enemies

- 7+ Huge fully animated boss enemies

- 3D scrolling CGI backgrounds

- Constant 60 fps

- Difficulty rank system

EX Version specific changes:

- First port based on the arcade original with all graphics and animations intact.

- Added stage and boss select for training

- Added full autofire

- Normalized diagonal player movement

- Improved button priority between shot modes (FRONT,LASER,BACK,AUTO)

- Increased player fast strike shield endurance

- Improved background contrasts

- Added additional background layer graphics

- 32 bit like graphic updates

- hundreds of small fixes