Also note there are a couple of cool things you can do you might not think about: You can select multiple tiles at once (ex. from A to S) and press the first key of the serie.. it will assign all the following letters (or numbers) as well. You can navigate in the tileset with arrows, shift-arrows for selecting multiple tiles (which seems kind of buggy for some reason though), backspace, space, page up, page down, home, end... each of these keys allow you to navigate in the tileset ; you shouldnt have to touch your mouse once when you assign tiles to text You can assign different tiles to 'a' and 'A' , for example, but if you only have defined 'a' and you type 'A' in your map, the tile !@#$%^&*igned to 'a' will appear ; so you dont have to bother with case unless you specifically !@#$%^&*igned different tiles to lowercase / uppercase of that letter Thanks for reporting that bug... actually it seems only the preview is screwed up, because if you type text in your map, the correct tile was !@#$%^&*igned... fixed