Seattle-based Big Fish Games, a developer of casual games, said today that it is auctioning on eBay a chance to have your picture (and three friends' photos) used in the next episode of its "Mystery Case Files" series.

Gamers playing the sequel will try to find "hidden" characters in the game. Those characters will be the photos provided by the eBay winners.

The auction started this morning here and will close at 3 p.m. March 8. All of the proceeds will go Child's Play, a game industry charity that aids terminally ill children.

This afternoon, the highest bid was at $115.50.

According to Big Fish Games' Web site, the company has a history of charitable giving. It donates 5 percent of all profits to causes that help those in need throughout the world.