GRF Policy
Players are allowed to replace map textures only. This means a texture pack that only changes how the ground, walls and environment look.
Switching GRF In-Game
Type /grf <GrfName> in the chat to switch to another GRF without restarting the client.
GRF Modifications Prohibited (outside map textures)
Modifying the GRF for anything other than map textures is strictly prohibited. Sprite modifications of any kind are never allowed.