Speedrun Timer

Precision speedrun timer for Subnautica 2 with stopwatch-grade centisecond display, split tracking, PB comparison, hotkeys, and 5 official categories. Built for both casual runners and serious hunters chasing sub-3:00:00.

Hotkeys: Space Start/Stop   Enter Split   Backspace Undo   R Reset   S Save PB

Attempt 1 Any% Idle
00:00:00.00
Ready to start  ·  Press Space or click Start
00:00:00
Current Run
—:—:—
Personal Best
—
Delta vs PB
—
Best Single Split

Live Split Tracker

Enter to split
Splits saved per category in localStorage. Colors: Gold = best ever, Blue = PB pace, Red = behind.

Hotkeys

Click the timer first if hotkeys don't respond
Start / StopSpace
SplitEnter
Undo last splitBackspace
Reset runR
Save as PBS
Skip current split.

Data & Export

Local storage only

Settings

Run History

Last 20 runs
No runs yet. Hit Space to begin your first attempt.

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Speedrun Guide

Subnautica 2 Any% Route — 3:30 Target

A community-vetted route hitting every checkpoint in this timer, plus glitch notes and optimal loadouts.

Frequently Asked Questions

How accurate is the timer?

Updates fire on every requestAnimationFrame — typically 60 times per second on a 60Hz display, giving 10–16ms precision. We display centiseconds (0.01s) and hide milliseconds to keep the readout readable. For a frame-perfect reference, compare against LiveSplit.

Where is my data stored?

All runs, PBs, and best splits live in your browser's localStorage. Nothing is uploaded. Use Export JSON to back up to a file before clearing browser data, switching devices, or updating to a new PC.

How do gold / PB / behind colors work?

Each split compares your actual split time against two baselines: your all-time best split for that checkpoint (gold) and the pace needed to match your PB (blue). If you finish slower than both, you fall behind (red). You can tune target times per category.

Wrong split target or missing category?

Splits get refined with each EA patch as routes optimize. Report mismatches and we'll update the targets.

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