Hello I was curious how much of Myst I could fit in a 4k cartridge (I ported all of Myst to an Apple II on three disks a few years back).  It turns out not much, but it was fun to try.   [update] Version 2.6 is a 16k E7 ROM with a fully playable subset of Myst.  You can get all 4 endings, solve two puzzles, walk around the main island, and complete the typical speedrun route   Web page about the project (including link to source code): http://deater.net/weave/vmwprod/mys