You got me thinking, thinking really hard. Why don't you combine this Retro Games component with the Puarcade extension, forking it into a better 1.5 NATIVE component!!!
Here's my official wishlist for this SUPER Arcade aka JGArcade extension.
The ability to emulate all of the retro emulators you have stated above plus Arcade/Mame.
Support of ibproArcade games (like Puacarde)
Tournament style format like what you have on your arcade website with leaderboards for each game.
A. FULL support of AUP and other Points system like Karma. Depending on the parameters in the backend, webmasters could make it cost members of their website to play games or it can be free. V.I.P. support, V.I.P. members don't have to pay if they subscribe to a AEC Plan.
B. Allow me to adjust how much it cost to play for EACH game and have a base fee for all games if a webmaster doesn't want to go through all the trouble of configuring all of the games.
Basic Joomla ACL support, like Puarcade. Make it so we can lock game "folders" aka categories for V.I.P. only, or groups like Registered, Author, Editor and up. This will be extremely helpful since I use NOIXACL on my website and I could use my custom groups.
Vanama, if you can build an extension like this bro, you will have a massive amount of webmasters coming to subscribe to your website. Think about it, websites that have both your JGCasino and "JGArcade" plus point systems should gain user activity and I know I will be willing to subscribe longer!