What a CS2 demo analyzer can and cannot tell you
A CS2 demo analyzer can rebuild what the server recorded: positions, view angles, health, weapons, money, kills, bomb events and every grenade. It can show that from any angle and turn it into stats.
It cannot tell you why a player chose something, what they noticed, or what their screen looked like. Those were never in the file.
What does a CS2 demo actually contain?
Game state written by the server, tick by tick: player positions, view angles, health, armour, weapons and money, plus events like round starts, kills, bomb plants, defuses and grenade throws.
It does not contain video, video settings, or mouse movement between ticks. It does carry each player's crosshair. Voice depends on who recorded the demo. Server-recorded demos such as FACEIT's can carry player voice. GOTV broadcast demos and Valve matchmaking demos carry none.
Every feature of every demo tool comes from that list. Anything that needs a player's monitor or their thoughts cannot be built on a demo, by anyone.
What can a CS2 replay not prove?
- Attention. A view angle shows where the crosshair pointed, not what the player noticed.
- Intent. A planned rotation and a panic are the same coordinates.
- Calls. Unless the demo has voice, you cannot know what was said.
- The player's screen. A rebuilt POV uses a different renderer. It draws the player's real crosshair, but not their HUD or settings.
- A habit. One match is not enough. A pattern needs repeats across demos.
- Cheating. A replay is not an anti-cheat verdict. Smoothed motion can make normal aim look strange either way. Report suspicions on the platform where the match was played.
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What is recorded, and what is the tool's own work?
| Layer | Examples | How to treat it |
|---|---|---|
| Recorded | Positions, health, weapons, money, view angles, kills, grenades | Fact. The server wrote it down. |
| Derived | Rounds, scores, ADR, KAST, cameras, grenade paths | Arithmetic on recorded data. Check the definition. |
| Interpreted | Whether a choice was good, why a rotation happened | A human judgement, not a fact from the file. |
Most arguments about demo tools are really about which layer a number lives in. A rating is derived. "He should have rotated" is interpreted. Printing it in a confident font does not make it recorded.
Three phrases keep a review honest: "the replay shows" for recorded state, "the tool calculates" for derived numbers, and "one reading is" for judgement.
How precise is a CS2 replay?
Memorin samples player state every two demo ticks: 32 snapshots a second on a 64-tick demo. Playback draws smooth motion between samples. Kills and other events keep their own exact ticks, so event timing is not blurred.
That is plenty for routes, spacing, rotations and utility timing. It is the wrong tool for the exact shape of a flick. Playback also runs on whole ticks, so the order of sub-tick commands inside one tick is not recovered. For frame-exact duel study, the in-game player is the reference.
When a field is missing, the viewer shows it as missing. An older cache shows ammo as a dash instead of a plausible guess.
Why does a 3D replay still help?
Because the lessons are relationships in space. Distance between teammates, the route into contact, the volume a smoke filled, the height difference between two players who look side by side on a radar: none of that reads well as a number, and all of it is obvious in 3D.
Walk mode checks the last step. Stand where the player stood, at player height, and see whether the sightline a floating camera shows existed for anyone in the round. The order of work is in how to review a CS2 demo.
Which CS2 demo analyzer should I use?
Match the tool to the question:
| Your question | Tool type |
|---|---|
| Am I improving across many matches? | A stats platform |
| Why did this round fall apart? | A 3D replay viewer |
| Where did everyone stand, fast, on a phone? | A 2D radar replay |
| Can I win this situation if I play it again? | A playable replay moment |
Memorin is a replay viewer with a 2D radar view, a review panel and playable moments. Full 3D is PRO. It has no rating across matches. The CS2 demo viewer comparison names the other tools, each claim from its own site.
FAQ
What data does a CS2 demo actually contain?
Game state written by the server: player positions, view angles, health, armour, weapons and money over time, plus rounds, kills, bomb plants, defuses and grenade throws. It has no video and no video settings.
Does a CS2 demo record voice chat?
Sometimes. Server-recorded demos such as FACEIT's can carry player voice. GOTV broadcast demos and Valve matchmaking demos carry none, because the recorder never receives team voice.
Can a demo analyzer tell you why you lost a round?
No. It can show where everyone was, what they held and when each event happened. Why a decision was made depends on plans, calls and intent that the recording does not contain.
Is a replay POV the same as the player's screen?
No. A rebuilt POV is drawn from the recorded view angles by a different renderer, so it has none of that player's resolution, settings or HUD. It does draw their real crosshair. It shows where they looked, not what their screen showed.
How accurate is a CS2 demo replay?
Memorin samples player state 32 times a second on a 64-tick demo and smooths between samples. Kills and other events keep their exact ticks. Sub-tick command order inside one tick is not recovered.
Can you use a CS2 demo to prove someone is cheating?
No. A replay is not an anti-cheat verdict, and smoothing between samples can make normal aim look strange. Report suspected cheating on the platform where the match was played.