Shoot the enemies to gain points. Don’t let the dreaded Boing Balls or Watchy Games hit the bottom, or you will receive instant death! |Happy birthday PC Engine! October 28th 2017 Check out our new little free birthday present game, and our new mascot, RomRom - Nantettatte Engine! Aetherbyte Updates - 10/15/2016! . Enemies that reach the ground subtract points. https www. gogofreegames. com nantettatte-engine-homebrew-download Nov 09, 2017 · Nantettatte Engine is a simple high score based shooting game (shmup game).