Extendable Grid Tiling System

I designed this for my own D&D game.

It's a 6 x 6 grid of tiles that is (theoretically) infinitely extendable.

I usually put all the tiles in a box and let the players build the map from my descriptions. I think it creates more player investment as they are literally building the world and populating it with blue-tac monsters, furniture and their minis

I'm still playtesting it, so I might make some more tweaks as we refine it.