[sjm-lbm]

The Mac version was in Hypercard, all of the other versions were different engines written from scratch for Myst.

They actually had to use the same color palette for each age to ensure there wasn't any strangeness as they flipped between cards to move around in the game.

[codezero]

I thought it used Macromedia (Shockwave or precursor?)

edit: I guess not, neat!