Idk how to put Tiles over my Tiles, i was trying to make the Map called: "cs_Liberty" but it didn't make it out! If anyone can explain this it would be appreciate!

Thank you!

I'm not sure if this is what you want but have you tried right clicking on the tiles and blending them?

If you want tiles to be over tiles, visually, you can blend them (like blend sand to be over grass tiles to make it look like sand is spilling out of the tile)
If you want to have multiple floors, you can't, because CS2D is not made with those mechanics in mind.

We'll both of you know this but ok.. Thanks for both of you guys lol..