I've upgraded the version of RetroArch that Vizzed uses from 1.15.0 to 1.16.0 for most of the systems.

It's been a while since RetroArch had a version change so this version change came up a lot of updates. While many of those updates aren't going to be noticeable, or may not benefit the web version, some will result into RetroArch running better and also capable of running more systems.

With this update, PlayStation is not compatible with the web version of RetroArch. Game Gear, Sega Master System, and Sega Genesis work in the latest version (they haven't worked in any of the updates in a long time). MS-DOS (via virtualxt) is also now supported, which is a potential system that could be added to the Retro Game Room eventually.

Systems added thanks to 1.16.0
-PlayStation

Here's a list of every system that got upgraded to 1.16.0
-Arcade
-Atari Lynx
-Commodore 64
-Game Boy
-Game Boy Advance
-Game Boy Color
-Neo Geo Pocket
-Neo Geo Pocket Color
-Nintendo NES
-Super Nintendo
-TurboGrafx
-WonderSwan
-WonderSwan Color
-Virtual Boy

Systems upgrading from 1.10.3 to 1.16.0:
-Game Gear
-Sega Master System
-Sega Genesis

Systems still using 1.9.0:
-Atari 2600
-Atari 7800

Systems still using 1.7.7:
-Nintendo 64

If you experience any issues that are probably caused by the new version, let me know.

Here's a list of things added to version 1.16.0
https://github.com/libretro/RetroArch/blob/master/CHANGES.md#1160
(not all features are supported by emscripten)