Red Coin Challenge

Red Coin Challenge is a Side Quest in Mario + Rabbids Sparks of Hope, located on all five planets.

Description
On each planet, the player begins the Quest by passing through a Red Ring, making eight Red Coins appear on the field for a limited time. Collecting the last Red Coin completes the Quest and the player is rewarded with a Planet Coin from that planet and a treasure chest containing regular coins.

Beacon Beach
On the main beach area, close to SALESBOT 9.99+TX's shop.

Pristine Peaks
Outside, close to Victor's location.

Palette Prime
In the Pumpkin Patch area.

Tera Flora
On a high up platform between the flower area and the Everbloom Tree. A cannon after close to Mt. Spout leads to the Red Ring.

Barrendale Mesa
Found in the abandoned settlement.

Melodic Gardens
In the Flooded Ruins, on the water close to the central island.