Jokes aside, this is very cool. There's always the interesting tension of vendor lock-in vs. portability that defines the low-code space. Roblox's social ecosystem allowed it to make exclusivity to its platform a selling point to incentivize creators, but that might be harder for browser delivery - will people use you to prototype, then need to leave you once they want to move towards commercialization? To engender that ecosystem, finding a way to keep people on platform beyond a single game session will be an interesting challenge - but you have a tremendous ability to recommend related games to people and understand engagement with specific parts of a game.
On another note:
> Rosebud is in fact a reference to the cheat code in The Sims
There's something incredibly poetic about Citizen Kane being remembered more for its influence on a game than anything else - which, I think, would delight the character.