Online videos are often a great historical reference for obsolete computer games, because they show the game in context of an active community: https://www.rockpapershotgun.com/2019/05/06/how-youtube-lets-plays-are-preserving-video-game-history/
(I suppose this also applies to MUDs and online communities that aren't gaming related.)
miniblog.
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Are there 2D games focused on collaborative world building? I know of text based games (MUDs/MOOs) and a few 3D games (Second Life, Roblox) but nothing for 2D.