The HiDef solution contains an additional example mode showcasing a platform game running on the engine. It's important to note that both the RPG and Platform examples are using the exact same classes for drawing the tilemap and controlling the camera - only the GameplayScreen and Player classes differ to reflect the actual game mechanics.
I've added an example of a day/night cycle into the RPG game in both the Phone 7 and HiDef solutions, and made some optimizations to the map drawing routine as it was getting rather slow when several layers were being drawn. All looks good now, although performance on Phone 7 hardware is still a mystery :)
The two new downloads are after some screenshots:
Please note that the solution is built on XNA 4.0 and will not compile using older versions of the XNA SDK.
Hi-Def (Xbox & Windows) solution: http://team-mango.com/stuff/hideftilebase.zip
Phone 7 solution: http://team-mango.com/stuff/phone7tilebase.zip