A hell of a lot of people for the tiles. Here's the list, I sure it is complete:
Reck
Kyledove
Alistair
Nintendo (Minish Cap (Tiles), and original ROM, and Pokemon Emerald (Meteor Falls, a few house tiles, and the small tree. These are used as Placeholders until I find better tiles (apart from Meteor Falls, better in Purple!))
WesleyFG
Sega (Casino Tiles from Sonic 2 Beta)
Bomberman Tournament (Safari Zone Tree Tiles)
The various Tool Makers (Lu-Ho for Advance Map, ZodiacDaMaster for Door Manager, Microsoft for Paint)
Pokemon-Diamond of DeviantART - The Pont Water Edge thing Tiles.
spaceemotion
Alucus
Chimcharsfireworkd
Tyranitardark
Darkdragonn
Pokemon-Diamond (All these from DeviantART - Tiles)
C.N.C - The mart.
Zein
Teh Panda
SabfromPC - Underwater mountain tiles