AntiFall
AntiFall prevents fall damage by sending manipulated ground-state packets to the server during a fall. Unlike FallProtection, it does not place blocks; instead, it modifies the movement packets the client sends so the server believes the player has already landed.
- Category
- Player
- Type
- Packet manipulation
- Supported clients
- Wurst, Meteor, LiquidBounce, Aristois, Boze
- Minecraft versions
- All 1.21.x
- Detection risk
- Moderate on protected servers
- Last checked
What it does
AntiFall intercepts outgoing movement packets. When a fall is detected, it modifies the packets to signal a landed state, which resets the server's fall damage calculation. Configurable options:
- Mode — packet spoof, ground flag, or delay-based landing.
- Trigger distance — fall distance threshold.
- Compatibility mode — specific handling for servers with strict movement validation.
Client support
| Client | Status | Notes |
|---|---|---|
| Wurst | Yes | Multiple spoof modes |
| Meteor | Yes | Configurable landing patterns |
| LiquidBounce | Yes | Server-specific compatibility modes |
| Aristois | Yes | Multi-version support |
| Boze | Yes | Anarchy-focused implementation |
Server compatibility
- Hypixel — Restricted. Fall-state validation catches most packet spoofs.
- 2b2t — Permitted. No anti-cheat active.
- CubeCraft — Restricted. Sentinel validates fall-state transitions.
Detection behavior
Anti-cheat detection relies on:
- Position history. Server tracks the player's Y-coordinate over time; the fall-state spoof breaks consistency.
- Packet sequence. Ground-state packets that do not match the client's actual position are flagged.
- Fall damage absence. Landing after a long fall without damage is unusual.
Packet-based AntiFall is generally less detectable than block-placement FallProtection because it does not produce placement packets. On servers with strong position validation, both approaches are detectable.
Known limitations
- Some servers run custom movement checks that detect every known AntiFall mode.
- Timing is sensitive; server lag can cause the spoof to fail.
- Combined with Fly, AntiFall produces an obvious no-fall-damage pattern.
Related modules
- FallProtection — block-placement fall prevention.
- Fly — airborne movement.
- Speed — faster movement.
- Regen — accelerated health regeneration.
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