Gameloft is offering the official iPhone and iPod Touch version of The Oregon Trail, a classic historical and educational simulation game, for free on the App Store for a limited time, MacRumors reports. The description of the sale on the application's page in the App Store says the giveaway will continue for "a few days," but gave no specifics. The game, which re-traces the travels and struggles of early pioneer families as they crossed from Missouri to Oregon, normally sells for $1.