WorthPlaying.com Writes:
"This demo will focus on a segment of the single-player campaign mode, allowing players to experience various weapons, vehicles, and combat styles before our upcoming release in June. If you would like to gain exclusive early access to the demo, walk into your local GameStop or EBGames and pre-order Red Faction: Guerrilla before April 23rd (or pre-order it online). If you pre-order in-store, you will receive a card with a code and instructions one week prior to demo launch."