The "Atmosfear Chain Game" was a small game that is playable on the Atmosfear homepage. You play as The Gatekeeper and have to swing from chain to chain to avoid falling in the lava beneath you.
While the game only featured one level of difficulty, it taunted the player to try a second time after completion going so far as to claim you couldn't win "twice". Regrettably this message never changes removing much replay value.
Also included was a sliding puzzle in which you move tiles marked with the Atmosfear 'The Gatkeeper' cover art in an attempt to complete the image. Much like the chain game that followed it, only one image is available for the game despite it's claims for a "new puzzle".