Mini-Games are found primarily in Metroid Prime Pinball. It has a small challenge of varying difficulties rewarding either a Special or an Artifact. A Mini-Game also appears in Metroid Prime 3: Corruption on board the GFS Olympus, which involves "juggling" a pair of Training Drones by shooting them. Managing to shoot them ten times earns Samus a Gold Credit, and 20 times a Friend Voucher.
"Defeat all of the Beetles in Combat Mode before they hit you."
"Kill all the Burrowers before the time runs out. Run over the submerged Burrowers to make them surface."
"Kill all the Parasites before the timer runs out."
"Collect the Red Phazons with the Red Phazon Ball and collect the Blue Phazons with the Blue Phazon Ball. Collecting all Phazons of one color earns you a Jackpot. Collect both colors of Phazon to earn a Super Jackpot."
"Shoot the ramps marked by the arrows to score a Jackpot and a Double Jackpot. Shoot the open Gunship while the Clone Multiball is active to score the Super Jackpot."
"Defeat all the Metroids before the time runs out. Be careful as they can attach themselves to Samus and drain her energy."
"Hit as many of the Red and Blue Phazons as you can before time runs out."
"Alternate using the left and right flippers to jump from one wall to the other in order to reach the prize at the top."
"Shoot the ramp in the direction of the flashing lights in order to receive the reward before it is reduced to zero."