Mudboy is a tile-based platform-style Flash game engine written in Action Script 3. It is/was developed as a hobby for educational purposes.
It uses a tiny Architectural Framework (based on PureMVC) that I threw together for fun ("research") called Minibus.
You can download/view the latest SWF file here: http://mudboy.googlecode.com/svn/trunk/MudBoy/bin/MudBoyMain.swf
NOTE: you must draw some floor tiles and click Save Level BEFORE you press any keys. There is no bounds checking on the character, so an error will be thrown if you move outside of the screen.
You can read some stuff about Minibus here: http://mudboy.googlecode.com/svn/trunk/MudBoy/docs/Minibus.txt
These details are provided for information only. No information here is legal advice and should not be used as such.