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Running DOOM In A Keycap Takes Careful Work
(hackaday.com)
This is a most excellent place for technology news and articles.
What exactly is the obsession of putting DOOM of all games into any hardware over other games?
It's a fine enough game, but definitely not the game of choice I would choose if I were to choose an old game to be put in random hardware.
http://retrooftheweek.net/p/181/why-does-doom-get-ported-to-everything-/
This might answer your question
Really clear a cool. It makes sense it goes everywhere
It's easy to port, has low system requirements, and it's funny to see running on a toaster