Knock Knock | 1,082 followers on LinkedIn. Maker of Frictionless Games and Technologies | Knock Knock is a developer of frictionless games and technologies. We are a passionate team of game makers who believe that rapidly-developing frictionless technologies such as HTML5 and 5G will be a force of change in the gaming industry - leading to more viral user acquisition and new, instant social gameplay mechanics created by bypassing traditional app stores. Knock Knock is headquartered in San Francisco with a studio in Toronto.