Surgeon Simulator 2013 is a game that's unwittingly become the latest Internet craze, and you can download the Mac version here if you're interested in joining in.

The game sees you controlling the hand of a surgeon trying to save the life of Bob, who is having a tough time on the surgeon's table. 

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Surgeon Simulator 2013, by Bossa Studios is one of the games to come from this year's Global Games Jam. The game is unintentionally - or perhaps intentionally - black-humoured, as players try to give Bob a heart transplant. The game sees most players accidentally spill surgical tools around, drop items inside Bob, cut his ribs open, and try to take his innards out.

Surgeon Simulator 2013

The game is portrayed from a first-person point of view, with the surgeon's hand floating around in front of you, all of which adds to the dark humour. The operating theatre is covered in blood.

It doesn't help that the hand is somewhat hard to control. The A, W, E, R and Space keys control fingers, while the left mouse button lowers the hand, and the right mouse button is used for rotation. Sadly, for Bob, it's nowhere near as easy to control as it sounds.

All the time you play the blood count is going down, and Bob's chances of survival are decreasing.

This has led to many people posting images with pithy captions, and recording videos of their surgical prowess, such as this hilarious video by YouTuber Robbaz, who comments happily along as he spills surgical tools into Bob's open chest cavity.

Click here to visit GameJam and click the Mac download link to play the Surgeon Simulator 2013.

Alternatively just watch this video of the game in action from YouTube with commentary from Robert. (Warning, there is some mild swearing and gory content)..