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. Portal The Flash Version, a free online Puzzle & Skill game brought to you by fun game but original portal 1 and 2 is way more funner and will. Based on Valve's Portal, Portal: The Flash Version brings it all up in 2d! Portal: The Flash Version includes over 40 challenging, portals thinking levels, and.