"It’s time to arm-wrestle! In this game it’s not just about power; it’s about speed too!" (Smooth Moves) "Challenge a slew of strong opponents to an arm-wrestling contest. It's not about power--speed can also play an important role." (Gold)
The player has to win an arm-wrestling match by thrusting the to the side to slam down the opponent's arm. Both of the characters are the player's Miis. In WarioWare Gold, the Miis have instead been replaced by generic human characters (or a bear for the third level).
1st level difficulty: It is an easy match. In WarioWare Gold, the opponent is a mom.
2nd level difficulty: The opponent puts up moderate struggle. In WarioWare Gold, the opponent is a strong boy.
3rd level difficulty: The opponent puts up a strong struggle. In WarioWare Gold, the opponent is a bear.