The player is Nigel MacGibbons and has awoken with a hangover in a spaceship full of alien monsters. Nigel has to blast his way through eight levels in a time limit. The game is a run and gun shooter depicted from a top down perspective.[1][2]
Aktueller Software Markt said the game is a technical masterpiece but the gameplay has too little variety.[4]Amiga Joker [de] recommended the game to action game fans but said casual gamers should try it before buying.[7]The Games Machine compared the game unfavourable to Sega's Alien Syndrome and in conclusion said: "Leave this on the shelves; give it a miss."[2]ACE summarized: "Leavin' Teramis doesn't attempt to be original in any way. 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."[6]
