Mario Party: Star Rush also has a version of the game called Mario Party: Star Rush - Party Guest. This app can be downloaded off the Nintendo eShop for free. While it can be played alone with very restricted minigames, the primary focus of the app is to play full multiplayer with other players with only one game cartridge. If players buy an official copy of Mario Party: Star Rush, players can transfer saved data from Mario Party: Star Rush - Party Guest to their copy of the game.
Mario Party: Star Rushs board gameplay is the main focus of the game. Players traverse around a board, using a Dice Block numbered from 1-6. Due to the nature of the boards, most spaces landed on the boards in Mario Party: Star Rush do not trigger a special effect, while there are very few spaces that do: for example, specifically landing on a ? Block space grants the player a random item for use. Minigames can be collected from playing Toad Scramble and Coinathlon, with both modes having different ways play a minigame; in Toad Scramble, for example, players need to pass a Coin Balloon to trigger a minigame.
Toad Scramble is the only mode where players cannot choose a designated Mario character, instead, starting out with a colored member of the Toad species, corresponding to a player; said Mario characters can be used only when collected in the board, set as the leader, or with a use of an amiibo. In all other modes, however, players can choose and play as a specific Mario character, including Toad himself as an option if players wish to play as a Toad in other modes.
- Princess Peach
- Princess Daisy
- Donkey Kong
- Diddy Kong
- Bowser Jr.