From Starcraft to League of Legends, the e-sports market has gone through a massive expansion over the last decade in a half. Millions of dollars are now at stake over video games played in front of audiences of thousands, both at live events and in matches broadcast online. Y Combinator-backed Kickback is looking to expand the scope of that market by building competitive ecosystems around pre-existing games. Its initial release is built upon Minecraft, the adventure toolbox now owned by Microsoft. Kickback’s approach treats the entire experience as one product. While the games take place within the Minecraft app, the startup runs servers hosting the matches, arranges games, designs the “maps” games take place in, codifies the rules of each map type and keeps track of player wins and losses.