Hemovelocity
A boots enchantment that rewards players who fight on the edge of death — the lower your health, the faster you run.
⬇ Download on ModrinthHemovelocity
Hemovelocity is a custom boots enchantment that grants a speed boost when your health drops below half. The boost scales with how much HP you've lost relative to your maximum health, making it fair for all players regardless of heart count. It vanishes the moment you reach half health or above — a high-risk escape tool, never a permanent advantage.
Speed Boost
Formula: movement_speed bonus = (0.001 + 0.00025 × (level - 1)) × (max_health / 2 - health) × 20 / max_health
Base sprint-jump speed: 7.691 b/s
| Health | Level 1 | Level 2 | Level 3 |
|---|---|---|---|
| 1 | +0.496 b/s | +0.620 b/s | +0.744 b/s |
| 2 | +0.441 b/s | +0.551 b/s | +0.661 b/s |
| 3 | +0.385 b/s | +0.482 b/s | +0.578 b/s |
| 4 | +0.330 b/s | +0.413 b/s | +0.496 b/s |
| 5 | +0.275 b/s | +0.344 b/s | +0.413 b/s |
| 6 | +0.220 b/s | +0.275 b/s | +0.331 b/s |
| 7 | +0.165 b/s | +0.207 b/s | +0.248 b/s |
| 8 | +0.110 b/s | +0.138 b/s | +0.165 b/s |
| 9 | +0.055 b/s | +0.069 b/s | +0.083 b/s |
Installation
Drop the .zip into your world's datapacks folder and run /reload. No mods required.
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.9, 1.21.10, 1.21.11
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — see the MC Java Mods guides for the full walkthrough.
- Downloads as Hemovelocity.zip
- Download size: 6 KB
- Download link checked 24 Aug 2026 — working
These come from our own check of the pack file, not from the source page.