This video shows the latest progress on my entry for SA Gamedev 5. It shows the narration engine (with narration kindly provided by whoever made the 1984 audiobook.... need to find a narrator) and it also shows a (very basic) puzzle using a button and a door.
The graphics are (hopefully!) going to be replaced very soon by something very pretty.
All in all, 6 days in and I'd say it's not going too badly...