The most popular computer game that allows you to create an elf character is World of Warcraft. Dungeons and Dragons is a popular role-playing game that allows players to create their own characters, including elf characters.
Elves are a very common element in the fantasy genre, and many different games based on a fantasy theme allow players to create an elf character. World of Warcraft allows players to create characters from one of two different elf factions. Dungeons and Dragons is a game played with pen and paper, and also allows players to create the own character, including ones that are elves.