Welcome to the forums! =D
The hive is adding a new mode called mixed arcade as you can see on their trello roadmap. Trello TNT run will probably be one of the games in mixed arcade.
Please read the Bedrock Forum Rules. If you go to the top right corner of your screen there is a magnifying glass. Click on it and search up “tnt run”. As you can see it has already been suggested. That means that you duplicated a post, which means creating an unnecessary topic that has already been made, which is not allowed here. @Hlzyzptlk
Other than that, enjoy the forums!