Blizzard has released two classic games for free
The Lost Viking - a side scrolling puzzle game where you switch between three different vikings, each with a special ability, in order to reach the end of the level
Rock n Roll racing - a battle racer featuring music from Black Sabbath, Steppenwolf, and other bands
The games can be downloaded from here - https://us.battle.net/account/download/?show=classic
Source
The Lost Viking - a side scrolling puzzle game where you switch between three different vikings, each with a special ability, in order to reach the end of the level
Rock n Roll racing - a battle racer featuring music from Black Sabbath, Steppenwolf, and other bands
The games can be downloaded from here - https://us.battle.net/account/download/?show=classic
Source