If you’ve read up on an arcade game called Polybius, you will find information about an arcade cabinet from 1981 that became an urban legend. It was apparently a crowdsourced psychology experiment that produced psychoactive and addictive effects. The legend also talks of men in black attending the cabinets, simply for the purpose of data-mining. The arcade cabinet is as rare as rare can be and there are rumours that only a few of the original cabinets exist; one of which is stored in Basingstoke. James Rolfe, aka The Angry Video Game Nerd, did a piece on the legend too, so it has an interesting history.