[anthk]

You may like using Inform6 instead of writting your own parser. Most verbs and room behaviours are already implemented:

https://www.inform-fiction.org/

[ScottAdams]

Very neat indeed but I am partial to my own engine as I know it so well and can tweak it to do exactly what I need :)

[Rd6n6]

Part of the fun is making the engine and figuring out how the games work under the hood. The world model is surprisingly simple and flexible in these games. Learning about this style of world model gave me some ideas for other projects

[anthk]

You can make an v3 z-machine interpreter in weeks :).