The Game and Watch handheld devices emulator for MiSTer FPGA by Pierco.
Place your ROMs into the folder "/media/fat/games/GameNWatch".
This is still a work in progress:
The core comes with a ROM generator so in theory, it could be possible to create new Game and Watch games. A SM510 assembler exists here: https://github.com/trevorjay/marios-binary-factory
It has been reported that some non-Nintendo games are working: Konami Top Gun, Konami Double Dribble and probably other ones.
I would like to thank Tonton for helping me generate the games!! Pre-compiled games are available on archive.org: https://archive.org/download/gnw-games
If you would like to convert games yourself, read the manual in the Tools directory.
A big thank you to all my Patreon contributors!!
Funkycochise, Ashfall, Gentlemen's Pixel Club, Mike Holzinger, SwedishGojira, lamarax, J BG, Auryn Beorn, Herbert Krammer, Dimitris Zongas, mutman, Cory Stargel, Christopher Garland, Dany Kwan, Stefan Pausch, Grumpy Old Gamer, Dave Ely, axxxtz, RaspberryAlpine, Tonton Kaloun, Johan Sjöstrand, Philip Lawson, Samuel Giroux, Allen Tipper, Darren Newman, Alan Steremberg.