Rubicon

Commodore Amiga - 1992

Gameplay is a Gryzor style flip-screen run'n'gun shooter (with occasional jetpack flights), with fairly unrelenting action. Power-ups are issued by a canister which the player will have to control in order to gain the weapon they want. The difficulty level is pitched high, as with Project X which was released at a similar time.

Rubicon

Commodore 64 - Released - 1991

In May 2011 an accident in a Soviet nuclear powerplant situated on Koala Island caused a major disaster. Radioactivity was spread over an area of 300 square miles with a radiation value of 1230000 rad. The Soviet Union and Finland were evacuated immediately. Months later terrifying mutations of animals were discovered in the area where radiation had spread. The only survivor tells us, "These creatures were beyond recognition, but seemed to possess the intelligence of mankind." It is your mission to disarm the nuclear weapons before one of the mutations starts using them. Good luck. We place our trust in you.