Boosts
The following boosts can be obtained.
Coin Doubler: Doubles coins.
Lucky Box: Shows power-ups found in opened boxes.
Mega Start: 250 meter boost at the beginning of the round.
Over Shield: 20 seconds protection, enemies get deflected.
Score Boost: +5 to the score multiplayer for the duration of the round.
Power-ups
The following power-ups are available. All power-ups can be upgraded with a certain number of coins. The first upgrade cost 250 coins, and subsequent ones more expensive.
Embiggenate: Allow you to get larger, making it easier to collect items and hit enemies.
Fireball: Clears enemies that are above you.
Magnet: Pulls in more coins as you jump higher.
Mega Mode: Become invincible after collecting a certain number of coins and power ups.
Various strategies
Once in the air and jumping, try to collect power-ups and items. Try staying in the air to avoid starting all over again. You can use a gem to continue instead of restarting. Switch characters to gain different bonuses. When you see gift boxes, aim for them to collect power-ups.