LongJump

LongJump extends the horizontal distance the player covers during a jump by applying additional velocity after takeoff. It is commonly used to cross gaps that are not traversable in vanilla and to reach areas that would otherwise require bridging.

Category

Movement

Type

Jump extension

Supported clients

Meteor, LiquidBounce, Future

Minecraft versions

All 1.21.x

Detection risk

High on protected servers

Last checked

2026-09-24

What it does

LongJump monitors the player's jump state. When the player leaves the ground, it applies a horizontal velocity boost. Configurable options:

• Multiplier — velocity multiplier applied after takeoff.
• Mode — single boost, continuous boost, or per-tick velocity override.
• Auto-jump — automatically jump before applying the boost.

Client support

Server compatibility

• Hypixel — Restricted. Movement speed during airborne is validated.
• 2b2t — Permitted. No anti-cheat active.
• CubeCraft — Restricted. Sentinel validates airborne velocity changes.

Detection behavior

Anti-cheat checks for LongJump focus on:

• Airborne velocity deltas. In vanilla, air velocity only decreases. Any increase is a signal.
• Distance covered per jump. Jumps beyond the vanilla maximum are flagged.
• Consistency. LongJump produces identical jump distances; human jumps vary.

Known limitations

• High multipliers produce movement that triggers anti-cheat instantly.
• LongJump uses fall damage mechanics differently on some servers.
• Combined with Speed and BHop, LongJump produces a compound movement profile that is trivially detected.

Related modules

• Speed — velocity multiplier.
• Fly — airborne movement.
• BHop — bunny-hop pattern.
• Step — auto-climb blocks.