The VMU was originally a memory card for the Dreamcast that put an LCD screen right in your controller. When you weren’t at home you could take it with you and play mini-games or swap data with your friends. While it was a largely underused feature of the console it did actually improve gameplay for some games like Biohazard: Code Veronica by displaying your life meter on the screen. As you can see there were a fair few variations that made it out into the world.
The Seaman VMU originally came bundled with the clear skeleton Dreamcast units sold at HMV
Visual Memory US Blue - One of the last VMUs to be released (HKT-7009-01)
Giant Chanel edition, sold to commemorate the release of Giant Gram (HKT-7008-02)
Visual Memory: Dolphin version, sold exclusively through Dreamcast Direct
Marble Brown edition which I have also seen been labeled as Wood Grain
Marble Blue edition, game in the same brown box as all D-Direct edition VMUs
Visual Memory Colour Version (Lime Green) (HKT-7007-04)
Visual Memory: Carbon Black. Another memory card only available via Dreamcast Direct
"Pure black" version that was sold after the release of the DD black system. Never seen it boxed as yet.
Visual Memory: Passion Pink. Similar in colour to the Hello Kitty version this was sold at retail.
Gather Godzilla Edition, actually the first VMU to be produced (HKT-7001) You can get more information on this special edition VMU from our feature page.