Madrigal, the italian coder who created the very first Game & Watch simulator, just sent an email to inform the he released  his 42th simulator: Condor (VTech, Time & Fun) Simulator - version S4/1.00 (Standard 4, final). An this time he release also the Source Code so if you are interested you could even create yoru own simulator starting from Madrigal work.

Download Condor Simulator here.