Corner Boosting is an advanced movement technique that exploits a buggy interaction between Wall Jumps and map geometry, allowing players to gain significantly more height than a standard wall jump. This technique can be performed on any edge or corner but requires precise positioning and timing.

When you attempt to Wall Jump, the game will check the closest point on the wall from your collision capsule to determine your launch angle and vector. When near the edge of a horizontal and vertical surface or on a curved surface, the resulting angle, and therefore vector, can become incredibly steep, and (after addition with other vectors) result in an incredibly steep resulting vector. This is further helped with the shape of the collision capsule and its rounded shape, allowing for even higher angles. This results in a Wall Jump with near to no horizontal velocity (depending on the surface) and incredibly high vertical velocity.

A detailed analysis by twiikuu explains the mechanics behind Corner Boosting:

Corner Boosting has several practical uses:

• It grants extremely high height, which can be very useful for traversal around the map. Corner Boosts can be used to scale buildings or escape enemy pressure on the ground.
  • An example scenario is Corner Boosting off a fence railing and using Heavy Melee Cancel to escape into a building roof.
• or combat. This is especially useful for Lash, whose Ground Slam gains damage depending on the height when used.
• Vision Control – Peek over obstacles (e.g., bridges, barrels) for better sightlines.
• Ability Synergy – Chain with abilities that benefit from extra height (e.g., Bebop’s Hook).

While Corner Boosting works on most edges, curved surfaces provide the most consistent results. Some notable objects include:

• Golden Idol Statue
• Stone Fencing
• Hotdog Stand
• Hogsworth’s Truck

There are some setups to get consistent Corner Boosts at certain spots. They are not mandatory; you can do corner boosts on any curved surface.