You can get over the Wall early in Big Walk by using a pink ball climb glitch: rebind jump to mouse-wheel scroll, put grab and drop on nearby keys, wedge into a Wall corner, then hold backward while rapidly alternating grab/drop and scrolling jump.
This method is for players trying to cross the Wall before collecting the late-game key that normally opens it. It uses ball physics, fast inputs, and a corner angle to lift your character upward instead of sending you through the intended Wall mechanism.
The early Wall climb is separate from the late-game Wall unlock

The early method climbs over the Wall without using any keys. You only need to reach the Wall area with a pink ball and change a few keyboard bindings before attempting the climb.
The intended route is much later. Big Walk normally sends you through tower progression first, then through the Black Tower and final key sequence before the Wall opens properly.
Setup for the pink ball Wall climb in Big Walk
| Action | Binding |
|---|---|
| Jump | Scroll wheel up / Axis 2 |
| Grab/Use | F |
| Drop/Throw | G |
Bring a pink ball to the large Wall. There is not a guaranteed close ball spawn beside the Wall, so you may need to go back toward a tower area to find one and carry it over.
Use two adjacent keys for grab and drop so you can drum them quickly while your other hand scrolls upward for repeated jumps.
How to get over the Wall with the ball trick in Big Walk
This climb works by trapping the pink ball against a Wall corner, then using repeated grab, drop, and jump inputs to push your character upward.
STEP 1/9
Bring a pink ball to the Wall

Carry one pink ball to the large Wall; if there is no nearby ball, check back toward a tower area.
STEP 2/9
Rebind jump to scroll wheel up

Open keyboard rebinding and set Jump to scroll wheel up, which appears as Axis 2.
STEP 3/9
Put drop and grab on adjacent keys

Set Drop/Throw to G and Grab/Use to F, or use any two nearby keys you can alternate rapidly.
STEP 4/9
Move into a Wall corner

Take the ball into one of the Wall corners and get tight against the corner with the ball in hand.
STEP 5/9
Face away at a diagonal

Turn so your back points diagonally toward the corner instead of facing straight into the Wall.
STEP 6/9
Hold backward into the corner

Hold S so your character keeps moving backward while wedged against the Wall corner.
STEP 7/9
Alternate grab and drop

Put two fingers on F and G, then rapidly alternate Grab/Use and Drop/Throw.
STEP 8/9
Scroll upward to jump repeatedly

Keep scrolling up as fast as you can while continuing the F/G alternation.
STEP 9/9
Keep mashing until the ball lifts you

Maintain the rhythm until the ball movement starts raising your character up the Wall and over the top.
Video help
Fix the angle and rhythm if the climb stalls
If you are not gaining height, the issue is usually speed or angle. Your back should be angled into the corner, with the ball close enough for the repeated grab/drop motion to keep disturbing the physics instead of simply falling away.
The F/G alternation has to be extremely fast, and the scroll-wheel jump spam needs to stay just as aggressive. Treat it as one continuous motion: hold S, alternate the two keys, and scroll upward without pauses.
It can take several attempts before the ball starts lifting you cleanly. The input rhythm is physically awkward, so take a break if your fingers start hurting.
Player count and controller limits for the Wall glitch

The ball climb is usable with one or more players because the actual climb only needs one player and one pink ball. Extra players can help move around the area, but they are not part of the climb itself.
Controller support is uncertain for this specific trick. The method depends on very fast scroll-wheel jump inputs and two nearby keyboard actions, so keyboard and mouse is the practical setup.
KEY!
Glitching over the Wall early also should not be treated as the normal Big Wall achievement route. Early brute-force climbs may get you past the geometry, but the achievement is tied to going beyond the Wall through the intended late-game route.
The normal way beyond the Wall
The intended route through the Wall comes after Big Walk’s tower progression. Clear the colored towers, collect their puzzle rewards, unlock the Black Tower, and work through the final key sequence.
After that, return to the Wall and use the final key mechanism in the secret room between the broken black sphere pieces. Once the Wall route is active, pass through to the far side for the Big Wall objective.
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