Ultimate Online Checkers is a Flash game developed by Edgar Miranda (lead programmer and designer) and many others (see in game credits). It won 7th place in the Mochi Media "Become a Rock Star" Flash Game Contest.
Ultimate Online Checkers is based on the popular board game, but it adds power-ups, such as the ability to purchase a king early in the game.
This polished game features online multiplayer gameplay and original artwork. It is complete and fully playable.
Ultimate Online Checkers (instant-play version)
Author's description of the game