Free CS2 demo viewer
MapSense is a free CS2 demo viewer that runs in the browser. You upload a demo (.dem, ZIP, RAR, gz or zst) and watch every round as a 2D replay with player positions, utility, kills, economy, heatmaps and callouts. Teams review rounds together live. There is no round limit and no paid tier. A 3D viewer on the real CS2 maps is in beta.
Free. The waitlist is open: pre-register with Steam or FACEIT in one click, we activate accounts in waves.
What you get
2D replay for every round
Tick-accurate through every round: positions, view direction, weapons, kills, bomb and economy of all ten players. No round limit.
Utility in detail
Smokes, flashes, molotovs and HEs with trajectory and timing. See when an execute actually landed.
Heatmaps and callouts
Heatmaps per player and side, official callouts right on the radar, custom callouts for your team.
Review together
Watch together: everyone sees the same round, draws on the map and chats. Guest links for teammates without an account.
Comments on the tick
Notes stick to the exact second of the round. The debrief stays with the round, not buried in Discord.
Stratbook and lineups
Save strats and grenade lineups, with a setpos command to practise them on your own server.
Pro demos
Import tier-1 and tier-2 matches from HLTV and study them in the same viewer.
Upload your way
.dem directly or as ZIP, RAR, gz or zst. FACEIT matches can be imported with a linked account.
Stats
MapSense rating, zone rating, tempo and team chemistry calculated from the demo.
3D viewer (beta)
Rounds on the real CS2 maps in 3D, with player models and first-person view. Currently in beta for enabled accounts.
From demo to debrief in four steps
- Get your demoDownload it from your CS2 match history, from the FACEIT match room or from HLTV.
- Upload itDrop the file into MapSense. Archives are unpacked automatically.
- Open a roundThe 2D replay is ready after a short analysis. Jump to any round and tick.
- Review with your teamStart watch together, draw on the map and pin comments to the exact tick.
Free means free
- Every round of every demo, no round limit
- No waiting period for later rounds
- No paid tier, no credit card
- Team review, stratbook and pro demos included
How MapSense compares with CS2 Lens →
Frequently asked questions
Is MapSense really free?
Yes. All 2D replay features work for every round of every demo, with no round limit and no waiting period. There is no paid tier. Free. The waitlist is open: pre-register with Steam or FACEIT in one click, we activate accounts in waves.
Does MapSense have a 3D demo viewer?
Yes, as a beta. It shows rounds on the real CS2 maps with player models and first-person view and is currently enabled per account.
Do I need to install anything?
No. MapSense runs in the browser. You don't need CS2 running and no download or plugin.
Which demo files work?
CS2 demos as .dem or packed as ZIP, RAR, gz or zst, including matchmaking, Premier, FACEIT and HLTV demos.
Can I review demos with my team?
Yes. With watch together everyone sees the same round live, draws on the map and chats. Teammates without an account join via guest link.
Is there an alternative to CS2 Lens?
MapSense is a free alternative. CS2 Lens gives free users rounds 1 to 12 and the rest after 30 days. MapSense shows every round right away.