Power-ups are gameplay items that enhances player traits for a duration. They are commonly featured in multiplayer maps in Halo: Combat Evolved, Halo 2 and Halo 3 and can be added via Forge in Halo: Reach and Halo 4. They are also featured in the campaign of Halo: Combat Evolved and Halo 2.
 List of powerups
The following is a list of power-ups throughout the Halo first-person shooter titles.
- Overshield - strengthens the user's shielding systems significantly (x3 in Halo: Combat Evolved, Halo 2 and Halo: Reach and x2 in Halo 3)
- Active camouflage - makes the user to be invisible for 30 seconds
- Custom powerup - Customisable power-up that can be added through Forge.