Sure! Here's an example of a simple game called "Dooz's Multiverse" implemented as a single HTML file using JavaScript:
Dooz's Multiverse
In this game, there are 10 universes represented by different pictograms. The user can navigate through the universes using the "Previous Universe" and "Next Universe" buttons. The current universe's name and pictogram are displayed, and the game is encapsulated within the `
` tags.