Much fair and vibrant puzzles, detailed graphics are back are on the valve's award-winning original mechanics.
The difference this time is that the facility is distorted and overrun by bushes and wines, you've got a small robot Wheatley as your partner.
Again you find yourself within the premises of Aperture Science's facility. The storyline this time is again filled with shocking twists and turns. GLaDOS is revived and you have to again work your way out making portals and solving the sophisticated puzzles.
Both portal and portal 2's tale are so touching it approaches your heart and leaves such a trace you keep pondering about it even when it ends.
Basic gameplay of portal is exactly the same. You've got a portal gun to shoot 2 portals to teleport through them. This time the challenges are blended with innovation with some new elements are introduced like laser deviating cubes, different gels of specific properties etc. You really have to run your mind to solve these mind- boggling yet fair puzzles. This keeps the game challenging, enjoyable as well as frustration free.
Voice acting is done to perfection. You can actually feel the wickedness of GLaDOS' evil voice. It really scares you when you explore the absolutely desolate, silent and magnificent premises of Aperture Science. Wheatley's voice was outstanding and gave the game more colors. Graphics look clean and beautiful.
Portal 2 is an even brilliant game than its already mind-blowing predecessors.