Oxyd

Oxyd is a sequel to a puzzle game called Esprit, where the player controls a small black marble that rolls around, touches things to activate them (Oxyds are opened by touching them), and bashes things to move them. The player has an inventory and can add some items to the inventory by rolling over them. The game's playfield is called a landscape. The player must open all the Oxyds to progress to the next landscape.

Oxyds must be matched in pairs. An unpaired Oxyd will close if an Oxyd of another pattern or colour is opened.

Computer Gaming World in April 1993 called Oxyd "my favorite new shareware title ... an exceptional offering, guaranteed to provide numerous hours of enjoyment". The magazine in April 1994 said that Oxyd Magnum "will quickly pull players deeper and deeper into its 100 devilish mazes". Computer Gaming World in May 1994 said that it "is a game with very few flaws.

The graphics are clean, and the mouse control is crisp", and praised the small size. The magazine concluded that "Oxyd Magnum is a top notch puzzle game that will keep players up to the early hours of the morning attempting to solve 'just one more level'".

Oxyd spawned a number of sequels: Oxyd Magnum, Oxyd Extra, and per.Oxyd (also known as Oxyd 2). Oxyd itself was a sequel to a lesser-known game, called Esprit.

Furthermore, Esprit is a derivative of Bolo for the Atari ST, also developed by Meinolf Amekudzi. Not to be confused with Bolo (1987 video game), released the same year. Bolo involves moving a paddle around, and is a derivative of Breakout, however the paddle can be moved anywhere on-screen, with the balls being able to bounce freely in any side or direction.