Complex sentence: World Gone Sour developed by Playbrains and published by Capcom is a 3D sidescroller video game created to promote Sour Patch Kids, a type of sour gummy candy.
Split into simpler sentences: World Gone Sour is a 3D sidescroller video game developed by Playbrains and published by Capcom. The game itself is a promotion for Sour Patch Kids, a type of sour gummy candy.