The Video Game History Foundation
“The Video Game History Foundation is a 501(c)3 non-profit organization dedicated to preserving, celebrating, and teaching the history of video games...” - link
#games
Chessguessr
“You will be shown a position from a chess game. Guess the 5 next moves played in the game. After each guess, the color of the tile will show how close you were. It's like Wordle…but for chess games.” - link
A bunch of puzzle games
“This page contains a collection of small computer programs which implement one-player puzzle games. All of them run natively on Unix (GTK) and on Windows. They can also be played on the web, as Java or Javascript applets.” - link