It was launched by Starwave Corporation in 1996, and featured personalized avatars, an embedded message system and live chat in a 2D side scrolling game world.

The game is full of interactions that force players to collaborate with each other in order to pass from one area to the next, by way of four-person vehicles and other game-like lobbying devices.

[2] It was originally designed by Russell Ginns, Gregg Foster, and Scott Wallin, with art direction and animation by Jonathan Maier and Andy Norman.

[7] Castle Infinity takes place in a virtual world created by dinosaurs 65,000,000 years ago to escape from a comet approaching the earth.

The virtual world has become infested with monsters but mammals have evolved to the point that they have invented the internet and can now access the Castle.

[8] Castle Infinity is a 2D side-scrolling world, where players collect "grow caps" and "hats" to unlock new play areas.