It ran very well on my Windows Vista computer, and the graphics were above average for those online flash games. Messed around with Ness and Mega Man. Mega Man had the ability to cycle between Guts Man's ability, Commando Man's ability, Nitro Man's ability, and a weird purple one I didn't recognize. He also had good edge guarding, superb recovery and plenty of abilities to attack with. I held my own against a trio of Gokus with a moderately low CPU intelligence level on Gangplank Galleon.