Information on the specific arcade version of Nemo is limited. The date references (90 11 09 etc.) likely point to different regional releases or revisions within its lifecycle.   Typically, arcade games of this era would involve dexterity-based gameplay, often including puzzle, action, or maze elements depending on the specific iteration of Nemo.

Nemo (90 11 09 etc)

Nekketsu Kouha Kunio-kun (Japan)