Chris Livingston has already extolled the virtues of Grand Theft Auto 4's amazing #WatchDogsIV mod. For the uninitiated, it brings Watch Dogs style environment hacking into GTA's Liberty City. For a full round-up of what it enables, head on over to Chris's Mod of the Week post . For a small look into the type of chaos it supports, stay right here.

Being a child, the first thing I did on loading the game was to start a traffic jam:

So far, so Watch Dogs. But the Traffic Lights prompt reappears quickly after. I wonder...

Yup. Multiple prompts means multiple pile-ups, meaning I can stack this thing right up. Time to do that. Everybody, welcome to the jam .

What makes this so funny—other than the obvious—is that the cars in the crash accelerate every time I hit the prompt, pushing them deeper and deeper into the ultra-jam. Also, as you can see from the picture above, a man has spontaneously combusted.

That's probably not a good sign.

Nope, definitely not a good sign. We have reached peak jam. It is jam-a-geddon.

Perhaps unsurprisingly, this tanked the game's framerate. My rig battled on regardless to bring you this dramatic re-enactment.

You can download #WatchDogsIV from here , and you probably should.