My small review and comparison of the Halo Trilogy:
Halo 1 - Epic and amazing game. It revolutionized my idea of gaming and set standards for future games. Its storyline was excellent and so was its game play. The flood added extra value to the story and a good twist, but could have been left out to make the game more fun The multiplayer was also very good but had no uplink to Xbox Live; the only way to play multiplayer was to use split screen and/or link up different Xboxes together through system link. Using XBConnect was also an option, but it was pretty laggy and a lot of modders liked to ruin the fun and cheat.
Halo 2 - Average single player game. The storyline was pretty cheesy. It had its moments, but the story seemed forced. Bungie would have had to sacrifice their story and purpose of the halo series if the flood was nonexistent in this title, but they should have made their presence much less prominent. The presence of the flood was nauseating; the flood took over many of the levels and were even harder to kill and more of a pain than before. The graphics were better and the physics were also enhanced. Despite its weak story, the game play and content involved were better than its predecessor. What really made this game shine was its multiplayer experience, which included not only the ability to play split screen and to system link, but also the ability to connect through Xbox Live. You could go head to head with your friends and random people whenever you wanted, which was an experience that never got old. The ranking system made the game very competitive and a whole culture evolved around it. Although the weapon balance needed some work, the game was still extremely addicting and subtly tactical.
Halo 3 - The end to the Halo trilogy. Halo 3's game play is up to par with the first one, if not better. The added content of equipment and guns really adds spice to the game. Not only can you use the new gear, but so can your enemies (and they use it quite well with the enhanced AI engine). The story is amazing and not forced like in Halo 2. There are epic moments when you destroy scarabs and escape certain death, but the best part of the story is in the end when you get blown out of your mind; you just have to remember to watch after the credits. The flood is of course back, for there could be no Halo title without them. This time Bungie smartened up and did not let them take over the whole game. Also, they are a lot easier to kill than in Halo 2. There are added easter eggs for those who like the Red vs Blue series, which tells you that Bungie kept in mind what the Halo community likes when preparing to deliver the last of the series. The graphics are amazing, but not up to par with what was expected. They were also inconsistent; sometimes you will be blown away by the graphics and facial expressions and at others you will be disappointed by the lack of definition. Despite this, the graphics throughout the game are better than necessary. Once again the multiplayer experience is what makes this game shine. The refined gameplay is near perfect; it is a lot easier to kill an opponent because the weapons are much more balanced. Unlike its predecessors, grabbing a sniper rifle or a rocket launcher does not turn you into a god. Multiplayer is smooth and addicting. Like in Halo 2, its ranking system adds more value to multiplayer games. Another keystone in its multiplayer is the 4 player co-op that can be done through Xbox Live. As an added benefit, players can record their moments of glory as videos and share them with friends. By playing on live, you can unlock different armor pieces to give your character a custom look. The Forge allows to change the level up by adding and deleting cover and obstacles and changing where the guns/vehicles are located. The added content makes this game the multiplayer experience of a lifetime.