Gradius

PC-8801 port of Gradius.

The PC-Engine port of Gradius

Commodore 64 port of Gradius.

ZX Spectrum port of Gradius.

Amstrad CPC port of Gradius. You are the last hope of the gentle people of Gradius. You've just lifted off to confront the all-out attack of the amoeboid Bacterions. Your hyper-space fighter is armed with the greatest arsenal in the galaxy. Air-to-surface and double beam laser cannons for incredible firepower. Powerful force fields for protection. Time and space warps for fleeing the dimension. You'll need it all just to survive. Because at the heart of the Bacterion Empire lies the Xaerous Superfortress - the nerve center of the all-knowing, all-seeing Bacterion Bio-Computer. It's a duel to the death, while the entire galaxy watches, waits, and hopes!

Sharp X1 port of Gradius.

Nintendo Vs. System port of Gradius, based on the NES version.

This version changed similar to the Famicom version but adds its slew of exclusive content to make up for the downgrade. A new stage, the bone planet was added between the Inverted Volcano stage and the Antennoid stage, featuring exclusive enemy types. There also four hidden warp zones and the ability to play as the titular ship from TwinBee if the MSX version of that game is played alongside Nemesis.

The NES port of Gradius.

The North American version of Nemesis features a considerably increased difficulty compared to the Japanese and European version. To balance this, the game spawns a fleet of orange enemies when the player loses a life to provide as many power-up capsules as possible to recover as many upgrades as possible. Also the North American version presents a continue feature (but only for three times). The title screen was also updated, showing an in-game reproduction of the promotional artwork behind the logo.