In-game timer with millisecond precision. It displays the elapsed time of the last completed level for 3 seconds on each level transition, and writes "split.txt" with the level times of the last played run.

To install, put in %USER%/Documents/AlephOne on Windows or ~/.alephone on *nix, and set the file as your "Solo Script" in the Environment section of the game preferences.

Splitting in-game timer

aperturegrillz

Marathon 2: Durandal

We're Everywhere

God Will Sort The Dead…

My Own Private Thermopylae

Beware of Abandoned Rental Trucks

sidr

Kindergarten

Total Carnage

Difficulty

Marathon Trilogy

Submitted Runs

tbcr

BossZombie123