These are fantastic - however it looks like they demand a powerful computer.
I have had this idea in mind for a while. Glad to see it coming to life!
Lots of great titles to emulate.
Thanks for playing and for the feedback! It should be fine on most modern computers and smart phones. If you're experiencing performance issues maybe try enabling 'hardware acceleration' in your browser settings. Also you can try reducing the quality through the in-game options menu (keyboard shortcut F4).