PC Games Worth Playing: Portal

Portal

This game was built on the Half-Life 2 physics engine with some minor modifications. It is an Action/Puzzle game set in a testing facility. The main 'weapon' is the Aperture Science Handheld Portal Device which allows the user to create portals which can be used to transport themselves, and other objects, between them. See, below, an overview of game play.

Aperture Science Testing Facility Introduction

Pros/Cons

Pros	Cons
The new take on a physics-based game is refreshing.	Because it is such a new take, the learning curve can be high. Because of this, by the time the player feels comfortable with the skills required to play the game, 11 of the 19 total levels are completed.
19 fun-filled levels which challenge the mind in new and exciting ways.	Because there are only 19 levels, the game only has between four and six hours of gameplay.
Price: Only $9.99 (See below)	-
Because it is largely built from the Half-Life 2 engine, it is highly moddable. There are many mods which can be found all over the internet.	None of the mods I've seen so far are nearly as awesome as the original game, which is just too short.
For replay value, the game includes several "Achievements" and "Challenge modes" which can pique your fancy.	However, many of these modes make the game so insanely difficult, that only the incredibly experienced gamer need attempt them.

	Portal Price: $74.99 List Price: $9.99
	The Orange Box Price: $20.00 List Price: $29.99
	The Orange Box Price: $17.99 List Price: $19.99
	Swarth Price: $9.51 List Price: $14.98
	CAKE IS A LIE Men's Tee Shirt Large-Black Price: $12.99 List Price: $17.99