// Free replay analyzer for StarCraft: Remastered

Your replays have more to teach you.

Turn your StarCraft: Remastered replays into a searchable library, player trends and the one thing to fix before your next game. Built by Grast.

Free Windows 10 / 11 Works offline No account
Download for Windows Try the live demo
64-bit installer · ~110 MB
// Live demo · no install

Don’t take our word for it. Open a real game.

Explore real progamer replays in Repalyzer’s own interface, right in your browser: read the build orders side by side, follow the economy minute by minute, check APM and hotkeys, and see what the integrity review finds in a game against a bot.

TvZ Light vs Soma TvP Speed vs Snow PvZ Mini vs Soulkey Integrity Grast vs a bot
// Three views

Your library. Your trends. Every game in depth.

Repalyzer reads the replays already on your PC. Nothing is uploaded and your original files are never changed, moved or deleted unless you ask.

Your whole replay collection, searchable

The Local Explorer imports the game's replay folder in one click, or any folder or .rep file you drag in.

  • Find any game by player, race, opponent, map, length, date or integrity status, and save the view.
  • Background analysis works through your newest 300 games, one folder or the whole library, and can pause while StarCraft is open.
  • Automatic mode analyses each game within seconds of it ending, with a card showing APM, supply blocked, idle workers and one thing to fix.

See what wins you games, and what loses them

Pick any player in your library, including yourself, on the Player dashboard. Known Players links every name one person has used, so smurfs and renamed accounts count as one.

  • Win rate by matchup, map and month, with your strongest and toughest matchup and map.
  • Scouting card for any opponent: head-to-head, their openings, what worked for you and the maps you met on.
  • Patterns compares your wins with your losses, including supply blocks, idle workers and the best time of day to play.

One game, minute by minute

Repalyze any replay, or double-click a .rep file once Repalyzer is your default replay app.

  • Game at a glance: the three moments that decided the game, and the opportunities you missed.
  • APM, hotkeys and build order: how much of your speed was spam, which groups you really used, and a copy button for the build.
  • Income, workers and supply: mining over time, idle workers and every supply block.
// Highlights

Built to tell you what to practise next

Numbers are only useful if they turn into a habit. These are the parts that do that.

One thing to fix

Your biggest gap in one line: the measure (Macro, Idle workers, Hotkeys or Speed) where this game fell furthest below your usual games in the matchup, with the worst minute to jump to.

Biggest gap to progamers · Light vs Soma Idle workers 9.6% of worker time Most idle at 8:00–9:00 · Progamers’ top 10%: 2.4%

Game card: share the game

The result, both players’ Skill shapes and the key numbers on one picture, ready to copy or save as a PNG.

See one in the demo →

What actually happened, not what was clicked

Repalyzer replays each game in a copy of the Brood War engine, so economy, supply and timings come from what really happened on the map. A command that never succeeded, such as a building that was never placed, is not counted as if it had.

How it’s measured →
// Skill shape

Five skills. One shape. How close are you to the pros?

Every game gets a pentagon: Micro, Speed, Hotkeys, Idle workers and Macro, each scored from 0 to 10. A 10 is the level of the best 10% of progamer games in that race and matchup. Here are three progamers’ averages over the games in their replay packs (7 minutes or longer), overall or one matchup at a time.

Micro8.9 Speed8.9 Hotkeys7.3 Idle workers6.8 Macro7.7
Outer ring: the best 10% of progamer gamesA typical D/E/F game, same matchup
SnowProtoss · 51 games
LightTerran · 91 games
SoulkeyZerg · 51 games

Snow, the average of 51 games (PvT 17, PvZ 26, PvP 8). Strongest at Speed (8.9), lowest at Idle workers (6.8).

See one of Snow’s games in the demo → How it’s scored →
// Pro replay packs

Measure yourself against the pros

Recent 1v1 games of progamers in their main race. Import a pack, pick the player in Adept, and see any game of yours against their average in the same matchup, minute by minute.

How to use a pack: unzip it, import the folder in Repalyzer and pick the player in Adept; greyed-out matchups have fewer than 10 games, so comparisons there are rougher.

// Install

Installing in two minutes

Repalyzer is a free tool made by one player, and code-signing certificates cost hundreds of euros a year, so the installer is unsigned: your browser and Windows will each ask once whether you trust it. Here is what you will see.

  1. Keep the file in your browser

    Your browser may say Repalyzer-Setup.exe isn't commonly downloaded. In Chrome, open Downloads and choose Keep. In Edge, open the … menu next to the file, choose Keep, then Show more → Keep anyway.

  2. Run it past SmartScreen

    When Windows shows Windows protected your PC, click More info, then Run anyway. The installer lets you pick the folder and adds a desktop shortcut.

  3. First launch

    Choose which Known Players lists to start with (Korean progamers, Foreigner players, both, or none), then import the game's replay folder or skip it for later.

Verify the file (optional)

Every release publishes its SHA-256 checksum: if it matches, you have exactly the file Grast built. Open a terminal in your Downloads folder and run:

certutil -hashfile Repalyzer-Setup.exe SHA256
// Requirements & FAQ

Good to know before you install

Requirements

  • Windows 10 or 11, 64-bit.
  • ~110 MB download.
  • StarCraft: Remastered replays (.rep). Older 1.16 replays work too.
  • StarCraft installed from Battle.net for the simulation tabs (income, workers & supply, Adept, hidden-unit scan). The free version is enough, and the game does not need to be running.
Is it safe to install?

Yes. Repalyzer reads your replays on your own PC and works offline: nothing is uploaded, and your replay files are never changed, moved or deleted unless you ask. Windows warns about it only because the installer is unsigned (a code-signing certificate costs hundreds of euros a year), not because anything was found in it. Every release is scanned on VirusTotal and published with its SHA-256 checksum, so you can check that your file is exactly the one Grast built.

What works without StarCraft installed?

The library, player dashboard, Patterns, APM, hotkeys, actions and build order all work from the replay alone. The simulation-based tabs read game data from an installed StarCraft; without it, those tabs are unavailable.

Can it tell if someone was maphacking?

The integrity review lists suspicious evidence in a replay and how strong each clue is. It never declares a player guilty; you decide, and you can mark games as reviewed, confirmed or a suspected bot.

How are the ratings and benchmarks worked out?

Every rating has one published formula. The Skill shape is scored against 4,905 progamer and 382 low-rank ladder games, and the Initial split against 2,920 progamer games at the same spawn position. Under the hood: the methodology behind Repalyzer walks through each one with worked examples.

Is there a Mac or Linux version?

Not yet. Repalyzer is a Windows app. On a phone you can use Send to my PC at the top of this page.

Language and accessibility?

English · colour-blind safe palette (Okabe–Ito) · text size up to 130%.

I found a bug. Where do I report it?

In the app, open Help & diagnostics and click Copy diagnostics, then paste it with a short description to Grast.

// Guides

Learn to read your own games

Step-by-step articles that take one part of Repalyzer and turn it into something to practise.

// Part 1 of 6

Getting started: Repalyzer in a nutshell
// Part 2 of 6

Your first replay review in 10 minutes
// Part 3 of 6

Build your own player dashboard from your replays
// Part 4 of 6

Scout your opponents with the dashboard and Patterns
// Part 5 of 6

Spotting maphacks and bots in replays
// Part 6 of 6

How do you stack up against the pros? Adept and the Skill shape
// Bonus · Nerdy deep dive

Under the hood: the methodology behind Repalyzer

Every formula and benchmark behind the numbers, built from 5,287 games. Drag the score explorer and check the maths yourself.
// Changelog

What's new

1.0.0 · 10 October 2026

The first public release, with everything described on this page.

See everything in 1.0.0Hide the full list

Local Explorer: your replay library

  • Import a folder, the game's own replay folder in one click, or drag in a folder or .rep file; Index mode keeps files in place, Copy mode makes managed copies.
  • Search and filter by player, race, opponent, map, duration, date and integrity status; save views.
  • Repalyze, integrity-review, launch in ShieldBattery or export several replays at once.
  • Compare two games: the older one becomes a dashed line on the newer.
  • Background analysis of your newest 300 games, a folder or the whole library at Gentle, Normal or Fast speed, pausing while StarCraft is open or on battery.
  • Automatic mode analyzes each game within seconds of it ending, with a card showing result, APM, supply blocked, idle workers and One thing to fix.
  • Clean-up of short games (likely dodges) and missing files; deletions go to the Recycle Bin after a hash check.

Player dashboard and Patterns

  • Win rate, record, recent form, game length and APM for any player.
  • Results by matchup, map and month, with the strongest and toughest matchup and map.
  • Head-to-head records and the maps played; Scouting card for preparing against an opponent.
  • Patterns: wins against losses, openings (yours and theirs), what worked, best time of day and day of the week.
  • Known Players lists link every nickname a person has used, with Korean and Foreigner progamer lists to start from.

Repalyze: one game in depth

  • Game at a glance with the Opportunity report: the moments that decided the game and the chances you missed.
  • APM (after warm-up, whole game and effective) and Hotkeys, plus Actions, Units, Buildings and Upgrades tabs.
  • Build order timeline with both players side by side, key timings against your usual, a named opening, and Copy build order.
  • Income, Workers & supply and the Macro rating: production uptime, larva use, idle workers and every supply block.
  • One thing to fix: your biggest gap in Macro, Idle workers, Hotkeys or Speed, with the worst minute to jump to.
  • Adept benchmarking against your usual games, your best game, any replay in your library or a known player's average (needs their replays in your library).
  • Skill shape: Micro, Speed, Hotkeys, Idle workers and Macro scored 0–10 against progamers.
  • Game card: a 1200×630 picture to copy or save as a PNG.

Integrity review and tools

  • Integrity review with a hidden-unit scan; every clue is labelled by strength, no player is declared guilty, and games can be marked reviewed, confirmed or suspected bot.
  • Colour-blind safe colours and text size at 100%, 115% or 130%.
  • Help & diagnostics with in-app guides and a copyable diagnostics report. Fully local and offline; your original replays are never changed.
// Get Repalyzer

Your last game has a lesson in it.

Free for Windows 10 and 11, works offline, no account. It installs in two minutes, and Automatic mode can review every game you play within seconds of it ending.

Download for Windows Try the live demo
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