Company
Irem Corporation
13 games on IGDB
Each point is one game's rating·dashed lines show each series' overall trend
Games on the chart (4)
 The Guardian Legend | Feb 5, 1988 | Main Game | – | 73 | 73 |
 Ninja Spirit | Dec 31, 1988 | Main Game | – | 71 | 71 |
 Vigilante | Dec 31, 1988 | Main Game | – | 55 | 55 |
 Ninja Baseball Bat Man | Sep 1, 1993 | Main Game | – | 70 | 70 |