Red Shells are items in Mario Kart games. They also appear in Super Smash Bros. Melee. They are red Koopa shells with no Koopas hiding in them. Red Shells are the "cousins" of the Green Shell. They are common items in Mario Kart Double Dash!! and Mario Kart Wii. Whenever you are in 2nd place or below, you may get Red Shells. They chase opponents in front of you and knock them over. You can easily dodge them by drifting. Both games alert you when one is coming for you. If you used a Red Shell and you are in 1st place the Red Shell will go in a straight line and break themselves by hitting a wall or other obstacle. You are less likely to get Red Shells in 1st place as the opponents behind you will get more. Whenver hit with a Red Shell your kart/bike flips. The difference between the Red Shell and the Green Shell is that Green Shells are green and when thrown they do not chase your opponent. They hit obstacles, going in many directions, before colliding into an opponent or obstacle and breaking. In Super Smash Bros. Melee Red Shells they do not fall off the edge (they instead go the opposite direction) and knock opponents and you upwards. Thrown Green Shells in Super Smash Bros. Brawl send you sideways. In Super Smash Bros. Melee, Red Shells do not fall off edges. They can easily Star KO or Screen KO an opponent (and you) if your Damage Ratio is at 2.0.