It uses AI to generate the text-based game from the input story text file. If you have heard of AI Dungeon game this game engine is used to create games like that.
Well the game created using this game engine is unique as in normal text-based rpg games the player has to select on of the option from the query based interface like this:
Where as in the games created using my game engine player has full freedom in interacting with the game like this:
And I think this concept 'BREAKS THE RULES' of all the game engines out there. Since this is the first game engine with the concept of unrestricted user interaction.