Portal 遊戲介紹:
Portal is a puzzle game and the game, and this game instruction is from www.t45ol.com. The objective of each level is to open the gate and advance to the next levels. To do that you have to fill the energy bar in the upper side of the screen. Each stone disk rotation produces energy. The disks will activate themselves if the energy lines connecting. Click on any disks and try to produce a energy chain as long as possible.
線上遊戲 Portal 是一款免費的小遊戲，可以在PC，Mac和移動電腦上玩。你可以閱讀下面的遊戲評論，裡面也許包含有關遊戲的說明，攻略和過關秘籍等信息。你可以在互聯網上玩Portal遊戲，也可以把遊戲下載後在個人電腦內玩。Portal小遊戲由Game Sheep 設計製作，在T45ol.com網站上共點擊63191次。