The project file "The Final Mask.mcta" was created over a weekend in about 19 hours. Is it perfect? No. But it is playable and demonstrates event mechanics tied to talking, listening, and giving items to NPCs. There are a few bugs in it, for example saying the game ending answer triggers a response from the Oracle when you are not in the final location. This is kind of charming in a way. Use this project file and experiment with it. Try to fix the talking bug. It should be easy to insert game logic to do this. Add logic that only allows the oracle to respond when you are at the final location. Use the target of "Location" and choose "The Chamber of the Final Mask" as the location for the logic.

Experiment with it; have fun.

I'm happy to answer any questions on how to create a mechanic or do something with the game logic. It is a unique kind of "programming language".