LÖVE

i'm making a little game maker (which is more than a "little" undertaking)
the main idea is that you should be able to edit everything within the maker itself, and that you should be able to see what your edits look like immediately

download kooltool on itch.io
the main development thread is on makega.me

i have some ideas for workarounds, but if anyone knows if it's possible to make a love2d program package up a love.exe / game.love file that would be really helpful

made significant updates:

significant user interface improvements
tutorial project to help you learn
set passability for tiles and specific map squares
exporting supported (windows/osx/love)

check out the updated video in the original post

That looks like a really cool way to create tiles for a tile-based game