Also available on the iPhone and iPod Touch, Rat Assassin sees players use supernatural skills to rid Dunwall's streets of vermin.
Copyright: Bethesda SoftworksPlayers will have the ability to slice, shoot and spring razor their way through 12 challenges, using abilities such as Bend Time, as well as Shadow and Adrenaline Kills to get the highest score possible.
Available to download now from the App Store, it is playable on the iPhone 3GS and above, the fourth-generation iPod Touch and any iPad with iOS 4.0 or later.
Announced last year, Dishonored follows a supernatural assassin driven by revenge after being wrongly accused of killing the empress he was once sworn to protect.
It will feature a flexible combat system, enabling players to use a combination of stealth tactics and direct attacks. The outcome of each mission is said to vary depending on choices made by the player.
Dishonored will launch in North America on October 9 and in Europe on October 12.
> Digital Spy previews 'Dishonored': Assassinate targets in Bethesda's steampunk game
Watch a trailer for Dishonored below: