Games that allow you to continue playing after beating the game

In theory, I agree with you, dott. Piergiorgio. In practice, I’m not going to succeed in convincing many people to release their source at all, let alone Day 1, so I feel like hassling the folks who’ve already agreed to release their source and game files after a set amount of time is potentially counter-productive. Besides, as Veeder pointed out some time ago:

Preserving that mystery for just a little while seems like a reasonable desire. Indeed, the 2011 Hat Mystery wasn’t released with a walkthrough.