Instruction card.
Assault Plus (アサルトプラス Asaruto Purasu?) is a top-down multi-directional shooter arcade game developed and released by Namco in 1988 in Japan only. It runs on Namco System 2 arcade hardware, and is the sequel to Assault, released earlier that same year. The game features two-player co-op, a different soundtrack, and removal of the "ZERO TIME BONUS" text from the original. Each stage is also presented in an episodic format, with both episodes titled "Rehersal for the Core" and "Battle for the Core". The game was included as a hidden game in Namco Museum Vol. 4 along with the original, and can be accessed by pressing Up, Triangle, L1 and R1 in the "X-Room" area.