Number of Android consoles

Anyone have a full list?
This is what i found at the moment
Anything missed?
1.-OUYA
2.-NVIDIA SHIELD
3.-MAD CATZ MOJO
4.-Game stick
5.-Game pop
6.-Valve Steam Console
7.-Zeebo

Alright, I'm not much of an Android gamer. What are the perks of gaming on an Android rather than just gaming on your regular console?