Question: what is itch.io used for?
Answer: itch.io is a website for users to host, sell and download indie video games. Released in March 2013 by Leaf Corcoran, the service hosts nearly 100,000 games and items as of February 2018. itch.io also allows users to host game jams, events where participants have limited time (usually 1–3 days) to create a game.