I just need to point out that D&D 4e and D&D Essentials are not two different systems.
Why are there multiple editions of D&D but not other systems?
In 2011 we have played
D&D 4e
Pathfinder
Desolation
Vampire the Masquerade: Revised
Shadowrun 4e
and we will be playing
Shadowrun 3e
Mage the Awakening
Ars Magica and Deadlands were missing from the poll![]()