Community features.
The new community system includes the website front integrated into the game. While on the forums, you can see who is logged on the game and even what server they are in. There is a button on the profile which allows you to join their server. You can check your messages and send new ones both in-game and on the forums. The join server screen features an IRC lobby. Much of the communication in Blockland 2 occurs through IRC. There are 3 official channels, Lobby, General, and Forums. Everyone on the lobby is automatically logged into the lobby channel. People in servers log into the general channel by default, but can also join the lobby and forum channels. The forum channel has replaced off-topic.
Player customization.
As stated earlier, every movement the character makes is customizable. Custom colors can be defined to color in parts of the minifig. Decals are now shapes made in the game, players can make custom decals in game in addition to using default ones. Using an in-game tool, players can carve their own leg and arm shapes. Various customization items can also be modified to some extent, for example, the air tank item allows you to change the number of tanks and the valve shape.
Deathmatch.
The new deathmatch GUI allows you to select from several base game modes, such as capture the flag, or racing, and then modify them. Although standard free for all and team deathmatch is included, more options are available then before. Included with the stock game are the aforementioned CTF and racing game modes, as well as reverse capture the flag, one flag capture the flag, king of the hill, defend the fort, among others.
Pre-constructed builds are included to play in, in addition to the ability to build your own.
Co-op missions.
Before I go into the co-op mCIAons, I should probably mention the singleplayer campaign.
Campaign mode.
In addition to freebuild, there is now campaign mode. You begin as a lone mini-fig, liberating the house of the evil human presence. Using various constructions, weapons, vehicles, and even normal human affects, you retake the house. You must sneak throughout the game without being seen by the human players, solving objectives, and battling giant insects, rodents, and other animals. If seen moving by a human, you immediately lose. If you freeze though, the humans may ignore you. If you complete all of the objectives, the humans are driven out of the house, leaving you control over the entire property.
Co-op mode allows you to play through the campaign. The AI is much smarter in this mode, and there are many more enemies, some unique to multiplayer only. Puzzles are upgraded to require team work to accomplish, and dynamically scaled to the number of players in the server.
Next... Custom Content.