This game was built during a 2 day hackathon. We always felt paper/ virtual trading games did more harm for people learning to invest. We wanted to experiment with a game where you can practice understanding a business and coming up with a fair value.
Have a play and send feedback: https://albentley.github.io/long-term-paper-game/
(takes about 30 mins to complete as it runs from 1995 to 2005, remember all companies are real all data is real, just names have been changed. also turn sound on!)