MetalNetDot is an unblocked games site based off of the code of "The Flash Archive" on Github. The main url is 10.0.0.210, which is self-hosted. Though if it's down, you can go to 0288007.github.io/metalnetdot/ which always be up. But due to GitHub Pages only supporting static website code, the chatroom only works on the self-hosted server.
Anyways, this network contains Flash games (and animations), including a few DOS games and some games ported to HTML5.
And a fancy shmancy chatroom with a login page allowing you to talk about whatever you want! (As long as it isn't illegal and/or traumatizing). Plus a song player on the menu that plays a different song depending on the day of the month! If you don't like the music, mute the website.
That's kind of it, so stay safe and don't get caught lacking! And the snitches get stitches and also no bitches. Oh yeah and please share this with your friends :D