Walk, climb some ladders, shoot some enemies, and get to the end. Active Enterprises managed to fuck up everything about this simple game.
It's possible to jump off any ladder and walk through the walls on the right. You can even exploit this to skip big chunks of the level.
Enemy AI amounts to bouncing off walls and edges of platforms. Shooting an enemy causes it to respawn elsewhere one second later, which could be directly on top of you. Of course, you can prevent enemy respawns by holding down your autofire.
Reaching the end of the stage is never really clear. Obviously, there's a single path through the stage, so you'll quickly figure out where to go, but what exactly is the end goal? You'll eventually step over a block that flips the variable that the main while loop is watching, and you'll get dumped into the next stage.
Underground features the most unique stages of any game on the cart (six, to be exact). Sprinkle in a few shitty sprites, add another shitty song. Voila, you're one more stupid game closer to shipping.
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