Battlefield 3

[Gareth]

For instance, on normal first person shooters, a shot to the leg will wear off after a couple of seconds as the character injects some miracle juice that stops all pain.

This is real. It can be seen every Saturday on Match of the Day, when a highly paid prat gets a dose of the magic spray, after being touched by the slightest of tackles. Note that through the years the magic spray has replaced the magic lucozade, which in turn replaced the magic sponge.