LMATilesets fail, the LMATile thread died, so why not try to make a level? This is how it works:

First, everyone who's willing to participate must subscribe to the project. After that, we will agree on a tileset and I will create a plain level with only standard background tiles. It's size is selected in such a way, that you can cut the level in pieces and give everyone participating one part. These will be something like:
3 participants: 50x30 or 30x50 (1500 tiles each block, 3000 tiles each participant)
4 participants: 60x60 (3600 tiles each)
5 participants: 25x40 or 40x25 (1000 tiles each block, 2000 tiles each participant)
6 participants: 40x50 or 50x40 (2000 tiles each)
7 participants: Many possibilities, with one empty part
8 participants: 30x50 or 50x30 (1500 tiles each)
9 participants: 40x40 (1600 tiles each)
10 participants: 30x50 or 50x30 (1500 tiles each)

Rules:
-Each block may only have one exit on each side.
-An edge block may have only two exits total, unless the level has only edge blocks.
-Place only bouncer ammo and powerups, ammo will be replaced later.
-Do not add a carrot, a carrot will be added later.
-Do not add a CTF base, CTF bases will be added later if the level suits CTF.
-If you require editing some tiles in blocks next to yours, you may only edit the closest 5 lines of tiles, unless you have permission from the owner of that block.
-A block should have at least one exit, unless there is a global agreement to make it a warp box.
-You may add warps to other blocks.
-Only on the top left block a Jazz level start event may be placed during construction of the level, start positions can be altered afterwards.
-Layers one to five and possibly six (depends on tileset) may be used.

The level will, no doubt, be used as battle level. If the level suits CTF, I will add multiplayer start positions and CTF bases in a seperate version. The level is not going to be used for treasure hunt.

I'm too lazy to :P sorry. Nah jk I'm not lazy but I don't have any ideas about levels

Well, with these rules the level will be extremely linear with a random layout, how are you supposed to make a layout if you can only have two "exits" from the blocks, if it were like that you would either have a lot of dead ends, have just a level that's basically a large circle, or have a level like a large tunnel that twists around that has two dead ends at the end. I think that if this were to succeed you would need to alter the rules abit and perhaps have a layout already made so it doesn't end up a random mess.

*makes exception* read the rule again please

EDIT: changed level dimensions for 3 and 5 participants too

I'll participate now I guess, and I'm volenteering the tileset dreamland or Noka's Tube electric 4

I'm allready making a level, it'a s Christmas one, But iI can't get the (-) mountains to work! HELP! please.

we're making a new level here :P ask your question in another thread plz ;P