Llamatron

Llamatron (stylized Llamatron: 2112 on the title screen) is a multidirectional shooter video game programmed by Jeff Minter of Llamasoft and released in 1991 for the Atari ST and Amiga and in 1992 for MS-DOS. Based on Robotron: 2084, the player controls the eponymous creature in an attempt to stop an alien invasion of Earth and rescue animals—referred to as "Beasties"—for points. The goal is to destroy all of the attackers on each level using a laser. Lamatron supports the twin-stick shooter controls of Robotron, but also provides a single-joystick mode: the llama automatically fires in the direction it is moving and holding the fire button locks that angle of fire, even if the Llama changes direction. Power-ups aid the player in defeating the wide variety of enemies they face along the way.

Released in the later years of the Atari ST and Amiga, Llamatron was distributed as shareware, containing the full game and a request to register the program for £5 if the user enjoyed the game. As of March 1992, at least 800 people had registered the game, making it unusually successful for shareware distributed without locked features or other purchase incentives. Reviews of both the Atari ST and Amiga versions praised its addictive gameplay, sound effects, and value for the registration price. Minter released a remake of the game for iOS, Minotron: 2112, in 2011.