Leavin' Teramis is a 1990 run and gun video game developed and published by Thalion Software for the Atari ST. A port for the Amiga was released a few months later.

The player is Nigel MacGibbons and has awoken with a hangover in a spaceship full of alien monsters.

[1][2] Aktueller Software Markt said the game is a technical masterpiece but the gameplay has too little variety.

What it does do very well is provide shoot 'em up addicts with a very humorous, colourful, and fast way to while away a good few hours.

"[3] ST Action compared the game to Alien Syndrome, Commando, and Gauntlet and said: "Teramis is a polished hybrid that possesses attractive graphics and more importantly, that "just-one-more-go" feel.