After the highly successful NES and SNES Classics, Nintendo tried its luck again with another revival of an old-school gaming system. The Game & Watch, which prefigured Nintendo’s Game Boy handheld, has been given new life and, unsurprisingly, became quite a hot item, despite its price, because of its limited run. Also unsurprisingly, it has piqued the interest of hardware hackers and modders who, after a lot of work, have been able to run a custom Super Mario Bros. game and, more impressive, the original DOOM.
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https://www.slashgear.com/nintendo-game-watch-hack-runs-doom-but-dont-get-your-hopes-up-22648468/