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The Atomiswave is a custom arcade system board and cabinet from Sammy Corporation. It is based on Sega's NAOMI system board (thus it's common to see the "Sega" logo on its boot up screen). The Atomiswave uses interchangeable game cartridges and the cabinet's control panel can be easily switched out with different control sets, including dual joysticks, dual lightguns and a steering wheel.

With the retirement of the aging Neo Geo MVS system, SNK Playmore chose the Atomiswave as its next system to develop games for. In a contract with Sammy, SNK Playmore agreed to develop five games for the Atomiswave system. Metal Slug 6 was SNK Playmore's fifth game for the Atomiswave, after which SNK moved on to a Taito Type X2 arcade board.


  • CPU: Hitachi SH-4 128-bit RISC CPU 200 MHz
  • Graphics processor: PowerVR 2 100 MHz
    • Polygon performance: 3 to 5 million polygons/sec
    • Rendering speed: 500 M pixels/sec
    • Additional features: bump mapping, fog, alpha-blending (transparency), mip mapping (polygon-texture auto switch), tri-*linear filtering, anti-aliasing, environment mapping, and specular effect
  • Sound processor: ARM7 Yamaha AICA (with internal 32-bit RISC CPU, 64 channel ADPCM) 45 MHz
  • Memory
    • System: 16 MB
    • Graphics: 16 MB
    • Sound: 8 MB
  • Storage media: ROM board


In Japan the Atomiswave was able to connect via a special modem to the AW-Net online system set up by Sammy. The AW-Net was primarily used to play online with other players and to create online player rankings. AW-Net was discontinued on 30 November 2006 following the merger of Sammy and Sega; the follow-up system was ALL.Net.




  • Chase 1929 (Sammy, 2004)
  • Force Five (Sammy, 2004)
  • Kenju (Sammy / DreamFactory, 2004)


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