Coin Fiends are a game mode in Platform Racing 3. The mode is extremely similar to Coin Battles in the Super Smash Bros. series. A similar concept was later included in Platform Racing 2 called Alien Eggs.
The mode's icon seen on the lobby is a yellow-colored swirl.
Players compete against each other to see who can collect the most coins within the time limit. Coins are found inside blocks that are breakable, with each block containing exactly 3 coins. If the coins are not grabbed after 8 seconds, they fade away and can not be collected.