Well, I can't name a big titles, there is none.=)
I did some work on mobile platform for the games still in progress (iridix entertainment, you've never heard of it=)), some concept art I can't show (NDA) for new title for EA mobile, not much experience as you see.
Anyway, here you could find some examples of my drawings as well as mockups from promo materials (follow the link to gaming).
http://www.foolstown.com/pf/Since I've got full time job in other then digital art field (violin maker) I try to avoid any projects on a rush.
Update:
Thank you everyone, from that point I'm off the market.