BossTimer

v0.1.6·Updated 2026-08-22

Shows the exact synchronized time remaining before the active boss leaves, using a native-style in-game HUD.

About this mod Author’s original text

Boss Timer

Shows the exact time remaining before the active boss leaves.

The game's standard boss UI exposes its numeric countdown only during the final ten seconds. This mod displays the

same synchronized countdown throughout the entire active fight in a compact native-style HUD.

Features

Reads the authoritative FishNet boss leave tick and tick rate.
Works in singleplayer and multiplayer without changing network state.
Automatically appears during a boss fight and hides on death, despawn, timeout, or return to the main menu.
Hides together with the native HUD while pause, Options, or another game menu is open.
Fades away in half a second when the game's native final countdown appears, avoiding any overlap.
Changes from white to orange during the final ten seconds and red during the final five seconds.
Supports HUD scale, opacity, vertical position, label, and decimal display settings through BepInEx config.

Compatibility

Development disclosure

This project was developed with substantial assistance from OpenAI Codex. The packaged code was reviewed and

compiled against the game before release.

Unzip the archive from playbuff and read the bundled readme / instructions first.
Most mods rely on the game's mod loader — the usual route is a community mod manager (such as r2modman): pick this game, install, and it handles the loader and dependencies.
For a manual install, put the mod files into the matching Mod / plugins folder inside the game directory.
Launch the game to confirm it loaded; mods with listed dependencies need those installed as well.

Install locations vary a lot between mods — the bundled readme is the most reliable guide.

Dependencies

Install these first, or the mod will not work:

BepInEx-BepInExPack