Elderlore

You are developing a medieval / fantasy roguelike with graphics, you are looking for nice tiles ? If so, have a look at those tiles:

420 -Pixel Art- Icons for RPG by ~Ails

Those tiles were drawn by Henrique Lazarini, aka Ails, a young brasilian artist whose art is worth to look at. And all those tiles are free to use as long as you mention their author, since they are licensed under a CC-BY-SA 3.0 licence.