If I created a game in this, what gurantee do I have that someone will be able to play this game in 100 years?
But seriously, it wouldn't hurt to have some kind of escrow service for products like this.
If you can't answer that question, why should I trust your for 3 years? Or 10?
Here's a list of lost video games. Hard to prove it's complete of course. https://lostmediawiki.com/Category:Lost_video_games
Offline games continue being playable only because of software/hardware emulation — it’s not a product of the game design/engine/language or anything else really.
I'm not yet sure of the details of how an escrow service might work, but honestly, I would be willing to look into it, that could be a good answer. I really do plan on Easel as a platform lasting forever. This is my life's work as much as it is yours.