It's another .io game, everyone. In the same vein as Agar.io and Slither.io, Diep.io is all about growing not by eating, not by chomping, but by blasting. That's right, someone took tanks and had it sleep with agar.io. This is the first video of a two parter, probably. So strap in and enjoy the ride. Dylan Hardy - Strangely Unaffected:.