Today's featured site is Not Doppler. I discovered this in the middle of class one day, back when proxies actually worked at school. Anyway, ND hosts many games, with 6 new ones added every Thursday. There are many classics, such as Tactical Assassin and Bloons, and many new, unheard of games. Go ahead, check it out.
P.S. - If you have internet restrictions, this is NSFWOS (not safe for work or school)