Brand & Grotesque of Toronto started a Kickstarter to raise $250,000 to take the blood of people playing video games. "Blood Sport: The Ultimate In Immersive Gaming" works when the controller rumbles, a blood collection system starts, drawing out blood from the IV connected to a gamer. The theory is that rumble in a multiplayer shooter like Call of Duty signifies blood loss, and thus executes it in real life.
"Our goal is to develop a refined multi-player unit that can be taken across the country for blood donation gaming events," say the makers — "Brand & Grotesque" of Toronto.
[Source]