The user interface of the game would be simple as the user would be felt complex in the gameplay, so the user here is kept in a minimalistic concept. The UI is designed in a way where the user gets maximised view of the game.
The Top left portion of the UI consists of the players if it is a multiplayer game
The top centre part is designed to show the current cube where the user is at the present. The cube number will be displayed boldly displayed as that is the only visual clue for the user.
The Top Right portion of the UI consists of the map. The Map is a key element for the user to show the overall cube and the numbering of the individual cube.