I usually do digital work. You can check some stuff at www.leukocyt.com (leukocyt.com/en for English version), but none of my work is very good to be honest :) Beware, the website can be a CPU hog.
Nothing is really based on games, but some is game inspired.
I also do some charcoal drawings (see attachment :) ) - many of those are inspired by the Silent Hill series, but again, nothing straight from the game.
I would actually very interested what you guys think about my works (especially those on my website).
El_Caz: Psilocke.jpg is a drawing I did of Psylocke, the Marvel character telepath ninja girl.
Terra.jpg is a pencil drawing with some photoshop effects for the tree leaves in the back and the text. She's a character from one of those forum RPG's about superhero mutants and such.
Hprsie.jpg, elephant.jpg and ronaldinho.jpg are little "sculptures" I made out of tinfoil hershey kisses wrappers. I use Horsie as my avatar on Steam. They're not drawings but I guess they could qualify as artwork.
I've got a bunch more on Photobucket but it's more of the same, mostly pencil drawings of custom characters belonging to other people.
Those tinfoil animals are friggin awesome!