Large games require flowcharts and diagrams to represent gameplay and game mechanics. Using a flowchart is helpful to find bottlenecks or duplication of effort, and it helps developers and UI/UX designers understand the game’s navigation.
There is no standard way to represent the navigation flow in video games, it depends a lot on the game. In this case, I was working on a multiplayer battle arena game for mobile, Get Wrecked. Instead of simply connecting actions (squares), decisions (rombes) and consequences (lines), I decided to layout them within the multiple screens the game would require.
My objective was to help our UI designer know which elements he had to fit on each stage, and it worked quite well. Not only the UI designer appreciated it, but also the rest of the team found it easy to understand.