Kongregate free online game Portal: The Flash Version - Based on Valve's latest hit, Portal: The Flash Version brings it all up in 2d! Portal: The Fl. Play Portal: The Flash Portal: The Flash Version. * , ratings; a 2. There are the End from Portal, The Flash Version. Player: SoraMitKeyblade Play the Game here. From behind the trigger of your portal gun you blast out door ways into the unknown. This is a puzzle, an adventure, a shooter and a tribute. Can you escape, do.