I love this game but I absoltuely cannot reccomend it.
Don't get the "not reccomended" wrong - this IS a good game. But it's dying. Blockland is a game where 90% of the content is produced by the users in the form of mods. Badspot, for most of Blockland's history, actually helped these modders by modifying the game engine to better suit their creativity. This helped keep the tiny community alive. A service called RTB was released by a game modder called Ephialtes - it had a friends list, private chat messages, IRC, and allowed people to download mods directly to the game. This is probably the main reason Blockland had any form of community at all.
This has changed. Badspot released an update that would remove maps and replaced them with slightly improved graphics. Seems to make sense, since you can just build everything with bricks, right? In actuality, the brick limit is atrociously low - on the other hand, terrain could be set to loop indefinitely. We were able to get around this by making the terrain on maps and building on top of the terrain. Now, terrain can only be done by one of two methods:
1. Building it with bricks
2. Modular Terrain
Option #1 leaves vehicles entierely out of the question, because the vehicle physics are atrocious - they are guaranteed to get stuck over and over again, and there's little to no smooth slopes because bricks are boxy. You CAN make brick terrain look good, but it takes an insane amount of bricks and you'll likely hit the brick limit. You can phase right through a brick if you're going fast enough in a vehicle.
Map Terrain vs Brick Terrain: http://i43.tinypic.com/2rc1ulh.png
Option #2 is modular terrain, which is bricks that have smooth ramps. Slightly better, but it's ugly as sin and still contrained by the brick limit. You can also phase right through it if you're going fast enough in a vehicle.
Modular Terrain: http://pixpipeline.com/s/eaf878362c19.jpg
Lastly, Badspot will NOT fix many of the issues, most notably the ones above. The modding community has practically pushed the game to its limit. Badspot prefers to argue instead of fixing issues. Many of the good people have been driven away. The community has been stripped to a bunch of Fourchan weaboos who crack at least one 9/11 or holocaust joke every two minutes. There's many other problems with this game, but this is how calm criticism is handled at Blockland: https://dl.dropboxusercontent.com/u/54466069/banned.png
Badspot accuses the people who don't like the game's development path of being "entitled" - but if anything, Badspot is entitled. These veterans produce most of the game's content in the form of gameplay. They host the game's servers for free. They are where all of the content comes from, and Badspot refuses to update the game to better suit their creative impulses. Blockland would never get anywhere without them.
Many major Blockland people have plain left due to these problems. People such as Ephialtes and Kalphiter. This game is great - but now, it's dying.
I wish Badspot or really anyone would make some kind of sequel and start all over again and get around the development problems.