Grid Seeker: Project Storm Hammer

Grid Seeker: Project Storm Hammer
Developer: Taito Publisher: Taito Platform: Arcade (Taito F3 System) Released internationally: December 1992 This game has a hidden level select.

Grid Seeker: Project Storm Hammer is a Gulf War-themed shoot 'em up.

Level Select

This game uses the Taito Code:

1. Hold the Service Coin button upon booting, and wait until a "SERVICE SWITCH ERROR" message pops up on the screen.
2. Press 1P Start (x3), Service Coin, then 1P Start again.

Upon this, the text changes to "ROUND SELECT MODE", and the game boots. Upon selecting a character, the player is redirected to a level select screen. Pressing 1P Up/Down changes the level, and 1P Button 1 selects.

(Source: RyogaMasaki)