MeshLab
An open-source mesh processor for cleanup, reconstruction, simplification, normals, measurement, filters, and format conversion.
Why use it
It repairs scans, third-party models, and broken exports, and simplifies or audits geometry before engine import.
Where it fits
Use art, animation, audio, levels, and narrative to make the game easy to read and its world convincing.
What to check
The technical interface and destructive operations require care; retain source files and verify UVs, rigs, and vertex attributes.