I have been evaluating 2D game engines for the Android. So far I have notcied that none of the engines support any standdard tile map formats.

One of the biggest tile map formats on the iPhone is the "TMX" format. It is xml based with base64 encoding. If your engine could read these files that would be awesome becuase most people could port their iPhone games to Android.

Their is and GUI editor that exist for this and it is quite popular with the iPhone crowd.

Here is the link: http://www.mapeditor.org/