These cores are not available within nightly builds, so I compiled and uploaded for people who want to test it or like to play with those tiny and classic emulators-simulator. All these cores are compiled to work with RGUI 1.3.0
Game & Watch core (simulator)
https://anonfiles.com/file/3a31b5d4d932fd654fac6c78d51bc889
Anyone can download the Game & Watch games from here: (No illegal thing involved, the retroarch team provided it for free)
http://buildbot.libretro.com/assets/cores/gw/
Prosystem Core (Atari 7800)
https://anonfiles.com/file/fd6b199f756c2dfd64f88c399eb7084a
Stella Core (Atari 2600)
https://anonfiles.com/file/b75ec741f03c1cf4d1413e19cc23f595
Vecx Core (Vectrex)
https://anonfiles.com/file/67bac74a010c346176241beafc0ab0f3
Why no 1002 version? These cores are so low demanding in performance, it's better to have it compiled with 1.3.0 RA.
Have fun!
Game & Watch core (simulator)
https://anonfiles.com/file/3a31b5d4d932fd654fac6c78d51bc889
Anyone can download the Game & Watch games from here: (No illegal thing involved, the retroarch team provided it for free)
http://buildbot.libretro.com/assets/cores/gw/
Prosystem Core (Atari 7800)
https://anonfiles.com/file/fd6b199f756c2dfd64f88c399eb7084a
Stella Core (Atari 2600)
https://anonfiles.com/file/b75ec741f03c1cf4d1413e19cc23f595
Vecx Core (Vectrex)
https://anonfiles.com/file/67bac74a010c346176241beafc0ab0f3
Why no 1002 version? These cores are so low demanding in performance, it's better to have it compiled with 1.3.0 RA.
Have fun!