Review: Half Life For PC
This game series was written by a real author, which makes the story much more structured and interesting. Artificial intelligence is so advanced in the game. The characters will actually interact with you. When the PlayStation 2 was just released into the market it had powerful hardware, so the characters are smarter in the system compared to the PC version.If you have played both versions you would notice the big difference between the interactions, which are a thousand times better. For example in the PC version in you obstruct a door with a box the enemies will not push it out of the way, the soldiers would just stand there and shoot at the door, but in the PlayStation 2 version they would actually bust the door to take you down. In addition the the game the graphics have been drastically improved, characters have been equipped with human like movements and facial expressions.
In the PlayStation 2 version they have added an additional mode where you can pair up with a team mate in a co-op campaign called "decay". Decays is a different story in its self. Decay palaces you as two women hazard course trainers who are involved in a horrible accident, involving a severe radiation spill. You and your team mate will have to work together to solve various puzzles throughout the game.
If you want to try the multi player campaign with a human partner, the game gives you the option to team up with a bot. There is a secondary multi player mode called death match where you can battle a friend. If you are looking to buy a new "old" game then this game will cure your boredom for a couple of weeks.