Sadly all text adventures herein have been broken during the Scratch 3.0 transition. I'll be working on a fix soon - until then you can still play them using Sulfurous.
Level 9 Adventure Interpreter
This was a much more ambitious port. Level 9 adventures featured enhanced vocabulary as well as graphics. All text was compressed and achieving decompression at playable speeds in Scratch was a big challenge. My port of the interpreter is a work in progress but will eventually allow all Level 9 adventures to be played within Scratch!
Scott Adams Adventure Interpreter
Scott Adams wrote some of the earliest text adventures for personal computers in the 1970's and 1980's. This is an interpreter which allows you to play 17 of those adventures!