Unofficial fan project. Not affiliated with or endorsed by Valve.
Deadlock and its art belong to Valve.

Match Replay
& Analysis.

Drop a match replay file and watch the whole match play out in 3D.
Take a look at the match summary to analyse the data and improve.
All processed locally in the browser.

Drop a replay anywhere .dem or .dem.bz2

Reading the match0%

Getting a replay

Open Deadlock and go to your Match History.
Pick a match and click Download Replay. Matches stay downloadable for a while after they're played.
Find the file. The game saves it here:
Steam\steamapps\common\Deadlock\game\citadel\replays
Drop it on this page, or click Choose a file.

Match IDs: Or type the match's ID on the card (it's in the match's details in Match History). The page asks deadlock-api where Valve keeps its replay and downloads it from there. deadlock-api knows many matches at once; for others it asks Steam, which it limits to a few lookups an hour.
Formats: .dem, and .dem.bz2 as Valve's servers hand it out (it's really zstd, and it's unpacked as it's read).
Privacy: The file is read in this browser tab. Nothing is uploaded anywhere.
Versions: Replays from build 6839 (October 31, 2026) onward.
Big files: A full match is 150–300 MB. Reading one takes a few seconds.

Layers

Map

Minimap

Playback

Skip pauses

Heatmap

Map colours

Streets Middle Rooftops Background

Lights and fog

Sky Ground Sun Rim Fog from Fog to

Match Replay& Analysis.

Match Replay
& Analysis.