James over at Grognardia started it, and I am late to get on the bandwagon.
My top 7 played RPGs in 2012 (and a good marker for the past several years):
1 – Classic Traveller (Admittedly not so much the RPG but the setting. I especially have played the games of Classic Traveller such as Striker, Book 5: High Guard, Adventure 5: Trillion Credit Squadron, Imperium, Fifth Frontier War, and Power Projection: Fleet; as well as using adventures such as Adventure 7: Broadsword as inspiration for Tomorrow’s War.)
4 – Serenity
5 – Prime Directive
6 – Mouse Guard
7 – Others I played around with in 2012 were Marvel Heroic Roleplaying and the new Star Wars: Edge of the Empire Beginner’s Game. Also messed around with Space: 1889 and A Song of Ice and Fire: Game of Thrones Edition.