Assault

Assault is a multi-directional shooter arcade game that was released by Namco in 1988 and was licensed to Atari Games for US manufacture and distribution. It runs on Namco System 2 hardware, and was the first game to use sprite scaling and massive sprite rotation.

Introduction
In Assault, the player must take control of a futuristic tank, attacking the forces of an alien environment. It used an overhead perspective which kept the player's tank centered in the screen while the playfield rotated around it.

An upgrade named Assault Plus was released later in the year, but only in Japan. It gave the player a choice between "easy" and "super" mode, featured different music, and changed the colours of the enemies.