IT IS 20 BY 15 TILES YOU FOOL!!!

I AM SO SMART
I AM SO SMART
S-M-R-T

I MEAN S-M-A-R-T


HAHAHA

*falls over*


I'm right, you know. Also, you should check tile height and tile width. From my experiences, you have to position the tiles you want in a weird way, and you will probably need to go off the edges and stuff.