To add some substance.

I do NOT enjoy concepts that are too vanilla, BUT, at the same time what matters most to me is character interaction.  Two players can put two characters and make it interesting.

I enjoy a myriad of settings, but most all contain conflict.  It's NOT a must, but pretty close.  War.  Battle.  Businesses.  Personal conflicts.  Online worlds inside of a "game."

I like war themes, sci fi.  Monsters and monster hunters.  

In most themes, I enjoy playing around with different time periods, or playing around with magical systems and how "things work" to give things flavor.  

I've RPed zombie survival, post apoc survival, small unit combat, police... Hmm.  More traditional DnD themes.  High fantasy.  High world building/fantasy with no magic at all.  Clandestine operations.  Prison worlds.  

That's just some information as I have a few moments to add some stuff.  

Cheers!

Az