It doesn't look quite as hectic and intense as the source material, but it's impressive regardless. Using the map editor found within Halo 5: Guardians a player calling himself TurbTastic has recreaded Rocket League!
The physics have some issues and the speed is slower, but the map does work. With some clever tinkering with the code for Capture the Flag matches, and assigning each player their own vehicle Xbox One players now have a way to expereince a taste of the fun PC and PS4 players have enjoyed since last summer.
A nice warmup for the Xbox One version of the actual Rocket League game, perhaps? Said game is due for release next week, but unlike the Halo 5 map it only has support for 8 players, and not 16.
You can read more about the map over on Forge Channel.