Halo Campaign Evolved still carries real Blam tag data. This is the tool for reading it — a modern take on Guerilla, working directly against the game you have installed. Install it from the Tools tab in the MJOLNIR Launcher.
Added
- A file browser over 17,135 cooked assets. The game ships no folders —
every asset is a flat entry in a container — so the tree is rebuilt from asset
paths. Tags appear under
tags/named the way Guerilla wrote them, textures undertextures/. Typing searches the whole tree at once and each result shows where it lives, so a half-remembered name is enough. - A Guerilla-format inspector. Collapsible sections, fixed label columns, flags as checkboxes, enums as dropdowns, vectors split per component, and tag references with an Open button that jumps to the target. The raw offset view is still there as a tree view, and your choice is remembered.
- Editing. Change a field and export the patched tag.
- A texture viewer. Every shipped texture is cooked as an Unreal virtual texture; the editor reassembles one from its tiles and decodes BC1 through BC7. View any of roughly 4,800 textures on a checkerboard with zoom, and export the full-resolution image as PNG.
- Tabs. Opening a tag or texture opens a tab rather than replacing what you were looking at. Tags with unexported edits are marked, and closing one is safe — pending edits survive until you export or revert them.
- Import links. A tag's references to other tags, textures and Blueprint actors are resolved and shown as chips you can click through.
Fixed
- Packaged builds started to "asset not found: index.html" instead of the app. Only the packaged build was affected, which is why it survived to release.
- Scenario tags containing an empty structure entry no longer fail to open.