Bossa Studios has released the iPhone version of its organ squishing, rib cage-slicing Surgeon Simulator.
If you already own the iPad version of the game then you don't have to pay anything extra - it will automatically transfer to your iPhone.
And, you'll be pleased to know, it's the exact same game as it is on iPad, just outfitted for the smaller screen.
The only thing to note is that you cannot record and upload footage of your failed surgeries on iPhone 4 and 4S.
Other than that, if you haven't already purchased Surgeon Simulator - perhaps due to only owning an iPhone - you can grab it for £3.99 / $5.99 on the App Store right now.