How do you get player 2 on Super Mario galaxy?

Answer 1

Connect a second Wii Remote.

Super Mario Galaxy

The second player (P2) has no character, but can use their cursor to do the following:

• Collect Star Bits using player 2's cursor (the same as player 1).
• Shoot Star Bits by pressing B (the same as player 1). Tip: Shoot Star Bits at Magikoopa and Hammer Bros to stop them from attacking so P1 can hit them. This trick also works solo.
• Stun enemies and moving obstacles (point at them and hold A). Tip: P2 can stun an enemy to let P1 kill it, for example, or crash two boulders into each other.
• Make Mario jump (point at him and press A, not in SMG2) Tip: Have both players jump at the same time!

Super Mario Galaxy 2

The second player (P2) uses an invulnerable character known as the Co-Star Luma. This is the orange star-like creature alongside Mario and Yoshi on the box art. Along with the Super Mario Galaxy abilities, P2 can:

• Stun Yoshi when he tries to run away after being hit.
• Spin attack weaker enemies (point at them, hold A and flick the remote). Tip: Try spin attacking a Luma.
• Grab coins and (some) mushrooms (point at them and press A, then release A to toss the item to player 1). Tip: If a coin appears during a boss battle while P1 is at full health, P2 can hold it until P1 needs it.
• Activate midway flags
• Signal to player 1 (press the +Control Pad to make sounds play on their Wii Remote speaker. Press -, +, 1 or 2 to play the same sounds on player 2's remote.) Tip: Point at something you want P1 to look at and press UP or DOWN. It won't do anything special but you can use this to direct P1's attention toward a critical item, object or enemy.

Answer 2

As long as the second player's Wii Remote is connected, he/she can help the second player by collecting and shooting Star Bits at enemies, as well as holding enemies in their place.