COSTAR
COSTAR is a client-side fix for piechart block entity reflection, available for Legacy Fabric and Ornithe builds.
What it does
The mod changes how piechart block entities are reflected on Legacy Fabric and Ornithe. Only the client needs it, so servers run without installing anything. Files cover 12 release versions, with the newest builds for 1.12 dated 2025-07-15. The project is open source under the MIT License.
Key features
Piechart reflection fix
Corrects how piechart block entities are reflected, so the blocks render as intended on the affected versions.
Gallery example
The author text points to a gallery that shows what the fixed piechart blocks look like in practice.
Separate Ornithe build
A separate Ornithe file provides the same reflection fix, using the 1.0.2+1.9-1.12-ornithe build for 1.12.
Gallery
Compatibility
Latest build for each game version and loader.
1.12.x1 of 1 version with builds
1.11.x3 of 3 versions with builds
1.10.x3 of 3 versions with builds
1.9.x5 of 5 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Questions
Does COSTAR need to be installed on the server?
More from Minecraft Java Edition Speedrunning
What the author says
A simple mod that addresses a questionable design decision in minecraft for versions 1.9-1.12 (fixed in 1.12.1-pre1) that affects fabric: the root.tick.level.entities.blockEntities directive in the piechart uses Class#getSimpleName for the profiler location, leading to fabric having different names from vanilla (and…
Official listing
- Modrinth page
- modrinth.com/mod/costar
- Owner
- Minecraft Java Edition Speedrunning
- Published
- 2024-03-01
- Updated on Modrinth
- 2025-07-15
- Facts verified
- 2026-10-15