Platform(s): web browser, maybe Flash?

Genre: I forget. Possibly an adventure game?

Estimated year of release: I don't have any idea on a release year, for all I know it was made in 1996 and survived till 2009! All I know is I played it somewhere between 2005–2009, giving 2009 as a hard upper bound on release year.

Graphics/art style: 3D cartoonish

Notable characters: Playable character was a Christmas elf, I think with blonde hair. Red and green outfit. Cannot remember the elf's gender. I remember no other characters.

Notable gameplay mechanics: If I recall correctly you could walk between rooms and probably needed to find some object or other.

Other details: Spent a lot of time on sites like www.santafun.net, might have existed on some site whose name was some permutation of the words "santa" "christmas" "fun" "games".