Arrow keys to scroll around map E+R to change tile type Q to input tile number directly Z to undo/redo To edit tiles you have to be in the editor. Click "See inside".
I've been working on this for a little while and now it's in a semi-okayish state so here you go! I still really need to change the way you actually edit the tiles, currently you have to input the X and Y of the tile to change manually and you have to do it by eye... but sadly I'm pretty tired and have no ideas for how to get the X and Y of the tile from the array just by mousing over it. Once I get that done I'll probably add buildings or something. Past that I'd probably have to get into the absolute cluster headache of implementing game logic... let's hope I don't get that far.