Grid is Good

Grid is Good (known as Points Pile-Up in the British English version) is a General minigame from Mario Party: Island Tour. The American name is a pun on the saying "greed is good".

Introduction
The player takes a tromino from the box on the left and places it on the grid. The top screen shows the space the player claimed it being highlighted, and another player's tromino is shown on the board taking away one of the first player's claimed squares. The number of points are awarded to the two players. The board changes, the players nod, and the game begins.

Gameplay
Players use the trominoes in the left box and put them on the board. After 10 seconds, the trominoes where the players placed them are revealed. The numbers that were claimed by two or more players are burned out, and the players are awarded points based on the numbers on the spaces only they claimed. The player that has the most points at the end of three rounds wins.

The grid changes size depending on the amount of players in the game.
 * 4 players — 4×4 grid
 * 3 players — 4×3 grid
 * 2 players — 3×3 grid

Controls

 * – Drag and drop panels

In-game text

 * Rules – American English "Place one of your shapes on the board to claim a set of numbers. You'll win points for the numbers you claimed that weren't also claimed by your opponents."
 * Rules – British English "Place a panel over the numbers to win points. You'll only get the points if your rivals didn't also try to claim the same numbers you did!"

Names in other languages
Battaglia matematica