How to Phase Into Boxes in Fortnite
Phasing into an opponent’s box is one of the most effective mechanics for finishing fights quickly in Fortnite. When done correctly, it allows you to break into a box unexpectedly and eliminate your opponent before they can react. In this guide, we’ll cover how box phasing works, when to use it, and how to practice it efficiently.
What Does It Mean to Phase Into a Box?
Box phasing is a mechanic where you use movement and momentum—usually with a stair or ramp—to clip through an enemy’s wall at the moment it breaks. Instead of replacing the wall and editing, you enter the box instantly, catching your opponent off guard.
This technique is especially strong when an enemy is low HP or panicking, as it allows you to end fights fast and reduce the risk of getting third-partied.
Best Map to Practice Box Phasing
To practice this mechanic consistently, use Raider’s Mechanics Training Map.
- Load into Raider’s Mechanics Training Map
- Select weapons from the current season
- Enter the Competitive section
- Choose Phasing Practice and press start
For settings, start with low or medium enemy health and select easy difficulty if you’re new. Make sure the stair variation is enabled, which is the default option.
How to Phase Into a Box Using a Stair
The stair phase is the most reliable and commonly used method.
- Position yourself close to the enemy wall with a short run-up
- Jump onto the stair so it boosts you forward into the wall
- Break the wall as you hit it to phase inside the box
- Immediately shoot the opponent once inside
Your jump timing and positioning are crucial. If you’re too far from the wall, you won’t hit it with enough momentum. You want the stair to push you directly into the wall as it breaks.
Adding Protection After the Phase
Once you can consistently phase into the box and secure eliminations, start adding builds for protection.
- After phasing in, place a cone to block the opponent’s movement
- If the opponent is pre-aiming or waiting to shoot, place a stair instead
- The stair blocks their first shot and gives you time to line up yours
This step is essential when playing against stronger players who expect box entry attempts.
Advanced Variations
To make your box phases less predictable, mix in alternative setups:
- Use a half ramp or cone before jumping in
- Weaken the wall first, then edit the cone and phase through
- Change your timing so opponents can’t easily pre-fire you
These variations are especially useful in higher-level lobbies where players are ready to counter basic stair phases.
When to Use Box Phasing in Real Games
Box phasing is most effective when your opponent is already weak. Avoid jumping into full-health players, as this is risky and often unnecessary. Ideally, damage them first, then use a phase to finish the fight quickly.
The goal is speed and control—end the fight fast, take the loot, and reset before another team shows up.
Final Tips
- Practice consistently in Creative before using it in ranked or tournaments
- Focus on clean timing rather than rushing
- Always be ready to build immediately after phasing
With enough repetition, box phasing will become a reliable tool in your fighting arsenal. If you have questions or want feedback, join the FortniteStars community and keep improving.

