Download
Hero Client
The most advanced Minecraft client. Performance, and the Hero Studios ecosystem.
Hero Client has a dedicated download page. Installs, launcher builds, Java
requirements and every supported Minecraft version live on the client site.
Open /client/download 
Hero Client 2.2
Per-version builds ship as separate Fabric JARs — install the one matching your Minecraft version. Java 21 for 1.21.x, Java 25 for 26.x. All 17 releases supported.
| Build | File | Size | SHA-256 | Get |
|---|---|---|---|---|
| 1.21.9 | HC-2.2-1.21.9.jar | 5.06 MB | 2ee2a499b7b9… | JAR |
| 1.21.10 | HC-2.2-1.21.10.jar | 5.06 MB | 49ca230b2f93… | JAR |
| 1.21.11 | HC-2.2-1.21.11.jar | 5.06 MB | 23d0b7256288… | JAR |
Click a SHA-256 hash to copy it, then verify your download matches.
Downloads are provided under the HBBML license. Install instructions are in the documentation.
Always verify the SHA-256 checksum of downloaded files.
Version history & known issues
All versions, every note
Every release of Hero Client with its warnings and known errors. The table above lets you download any version's files.
Phase 1 — multi-version + full GUI
- Multi-version builds: all 17 Minecraft releases (1.21 through 26.3) via version matrix — Mojang mappings for 1.21.x, bundled for 26.x
- Command framework: parser with quoting/escaping, registry with namespace + trie prefix search, completion engine, middleware pipeline
- Config validators: range, enum, TTL cache, diagnostics — invalid values rejected at write time
- Performance engine: FrameTimeMonitor (240-slot ring buffer), real FPS / avg FPS / 1% low, CPU/memory dashboard
- Accessibility: 6 features wired (color-blind filter, high contrast, UI scaling, screen reader, reduced motion, keyboard nav) with settings screen
- HUD editor: drag-and-drop, snap-to-grid, grid overlay, right-click visibility toggle, JSON persistence
- Keybind editor: click-to-rebind, conflict detection, per-row reset, persistence
- Mod menu rewritten: category tabs, real-time search, feature card grid with toggles, expand for details
- Settings screen rewritten: 7 sections (General, Performance, Visuals, HUD, Keybinds, Accessibility, About)
- QoL: smooth zoom (2x/4x/8x scroll levels), animated freelook, fullbright modes, dynamic crosshair, waypoint distance colors
- Mod wired to core command framework (CoreCommandBridge); 125 features across 16 categories
- Every feature actually implemented — no dead toggles
Requires Java 21 for 1.21.x, Java 25 for 26.x
Stabilisation and launch fix
- Fixed launch crash: glGetString called before OpenGL context existed — EXCEPTION_ACCESS_VIOLATION on every launch
- Fixed mixin crash: MouseClickMixin declared CallbackInfoReturnable on a void method — entire mixin silently failed
- Wired module-ai into the Gradle reactor — 221 tests now reachable
- 3,800+ tests passing across all modules
Requires Java 21 — not 25. The mod's fabric.mod.json enforces this, but older JREs fail silently
Fixed: MemoryRenderer GL function pointer null on launch
Early development build
- Modular client with 50+ toggles
- HUD suite, keybinds, mod menu
- 16-version build matrix
Alpha — expect rough edges
Some features are gated until fully implemented
Known: mixin descriptor warnings on some 1.21.x builds (silently skipped)
Could not copy — select the hash manually.