Eliminate Down is about a spaceship-owning person who really hates going south to travel, and doing something about it.
From Content to Expand "A+B+C+Start during the minigame goes back to its title screen... is this documented?"
On the title screen, press A, B, Right, Left, Right, Left, Down, Down, Up, Up on Controller 1. A sound should confirm this. After starting the game, A on Controller 2 will cycle through different weapon types, and B on Controller 2 will cycle through powerup levels.