Back in 4th grade, I remember finding XGen Studios and playing lots of their games (Motherload, Stick RPG, Defend Your Castle, Fishy, etc. Playing them makes me feel almost as if I'm traveling back in time.
Stickpage, Kiddonet, and Miniclip were a few more sites I remember back in the day. I would play Monkey Snowfight, Save the Sheriff, Crypt Raider/Acno's Energizer/Aqua Energizer, Demonic Defense 3, as well as a couple Cartoon Network games (Dexter's Labyrinth, Pharaoh Phobia, a Billy and Mandy dodgeball game, and a Kid's Next Door shooter).
What are some nostalgic websites/games from when you were younger?