ColEm v5.1 is released. ColEm is a ColecoVision emulator. ColEm will run software written for the ColecoVision video game console. ColEm package itself does not contain any games. You should place your own game files onto the SD card before running ColEm. Please, do not run any software you do not own with ColEm. The author cannot and will not tell you where to find free ColecoVision games.

ColEm v5.1 Changelog:
Added Coleco Adam state saving, loading, and rewinding.
Added support for more Coleco Adam keys (see documentation).
Disabled loading disks or tapes with no Adam firmware ROMs.
Added support for default palette file named ColEm.pal.
Now able to supply .PAL filename to -palette parameter.
Changing palette in Windows no longer resets emulation.

Download: ColEm v5.1
Download: ColEm for Android
Source: Here