LÖVE

If anyone knows a good map-editor program (preferably free) could you guys let me know? Thanks, yo.

We could help more if you were more specific. I'm assuming that you mean a tile map editor and i'll recommend Tiled. I've never used it, But i hear it's good. And there is a library that can load Tiled maps into love called Advanced Tiled loader, And even a collision module for it called Advanced Tiled Collider.

Ogmo is cool, if you can figure out how to load XML.

I've always ended up making one myself, dedicated to the current project I'm working on. In my experience, every game follows its own rules and it's hard (if not impossible) to make a map editor that works well for all games.

This is for future game ideas which is why it's a tad difficult to be specific. Thanks for all the help.

you could also create one with love by using tables and Table serialization