Warner's Batman: Arkham City has gone live on streaming games service OnLive in the US.
The retail version of the PC SKU is also available to purchase via EA's Origin store and GameStop's Impulse Driven service.
A free playable demo is now available on the UK arm of OnLive. It will be released officially on the service this Friday (November 25th), alongside the boxed retail, Origin and Steam releases.
The game was released on Xbox 360 and PS3 last month.
Speaking of which, the Robin Bundle Pack is now available on both Xbox Live Marketplace (560 MS Points) and the PlayStation Network (5.49).