Upgrade Sentinel

Your project. Your deadline. No surprises.

Unity 6 is the most disruptive release in years:

- Mono is being removed in favor of CoreCLR — reflection-heavy code, P/Invoke and BinaryFormatter break silently.

- Fast Enter Play Mode becomes the default — static state that used to reset on every Play now survives it.

- The Built-In Render Pipeline is deprecated — Surface Shaders have no upgrade path.

Upgrade Sentinel scans your project BEFORE you migrate and tells you exactly which files, lines and settings will cause trouble — with a plain-English explanation of why and what to do about it, plus a readiness score you can track over time.

WHAT IT CHECKS (18 rules)

- Deprecated APIs: FindObjectOfType, GameObject.Find, graphics format changes

- CoreCLR risks: BinaryFormatter, DllImport, debugger attributes, fragile static constructors

- Domain-reload safety: mutable static fields, singletons and static events that break under Fast Enter Play Mode

- Project settings: scripting backend, Burst embedding, Enter Play Mode options, API compatibility level

- Render pipeline: Surface Shaders and materials referencing incompatible built-in shaders

HIGHLIGHTS

- One-click scan from Window → Upgrade Sentinel, no configuration needed

- Click any finding to jump straight to the offending line in your IDE

- Readiness score (0–100) to measure progress across sprints, with per-category breakdown

- Ignore findings per file; export a full HTML report as a migration baseline

- Third-party folders excluded by default

- Works on projects that don't even compile — pure syntax analysis, zero project pollution

- Runs fully offline; your code never leaves your machine

A built-in demo scene generator (Tools → Upgrade Sentinel → Create Demo Scene) lets you see the tool in action in seconds.

PERFECT FOR

Solo devs and small teams planning their Unity 6 / CoreCLR migration, studios auditing legacy projects before an LTS switch, and anyone who has ever lost a week to "it worked before I upgraded".