Portal Flash Version is a fun adventure and puzzle game that you can play online and for free on Silvergames.com. You wake up in a strange cell and don't know where you are. You don't even have a name, you are just a test subject. The only thing you know is that you have to get out of there. Mission of the game is to reach the exit of every level.
Use the gun that you suddenly have in your hands to create two distinct portal ends. Both points are entrance or exit! Sound easier than it actually is and reaching the exit of every level can be harder than you think. Launch a portal with the left mouse button. Use the keys 'A', 'W' and 'D' to move. Have fun with this cool flash version of Valve's Portal!