The best strategy game ever
Play SC1 in your browser
Play SC1 (SC BW) online for free in your browser, without having to download or install a single thing. Full multiplayer! Works on Windows, macOS and Linux. Works on your Android phone and iOS, too!
Runs in your browser. Nothing to install. A game takes about ten minutes.
Choose your race.
Join a match
Rooms waiting for a second player, and games in progress you can watch.
| Map | Host | Players | Action |
|---|---|---|---|
| No open rooms right now. Be the first to host. | |||
Live now
Commanders on the site this minute. Say hello, or challenge one to a game.
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62 games were played in the last 24 hours. See the ladder →
«The best strategy game ever created»
Match analysis
Learn from every battle.
Revisit your matches, follow your economy, and see how your army changed. Turn the last game's decisions into your next game's advantage.
- Replay the turning point.Return to saved replays and see how the battle unfolded.
- Know your economy.Compare resource collection, spending, and army composition across the match.
- Track your progress.Keep your match record together and follow your competitive results.
Lost Temple · Terran vs Zerg
18:42TerranZerg
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Score
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Minerals
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APM
Everything fielded
- MadeLostStanding
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Terran Marine
471730
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Terran Siege Tank
361620
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Terran Medic
201010
Player shape
Learn the matchups
Strategy guides
Bio
TvZTerran vs Zerg
Take two bases, build more barracks than feels reasonable, keep marines and medics streaming, and make siege tanks the moment you see lurkers.
Three-hatch hydralisk
ZvPZerg vs Protoss
Three hatcheries and drones, hydralisks with speed and range to stop the first push, a fourth base behind lurkers, and hive tech before Protoss has its third.
Gateway macro into arbiters
PvTProtoss vs Terran
Expand faster than Terran, keep dragoons and zealots streaming from many gateways, see the mines with an observer, and win late with arbiters or carriers.
Game theory · UC Berkeley 2009
Learn to win fights, scout smarter and spend better.
The lessons of a real UC Berkeley course on this game, turned into guides and tools for your next match. Every idea ends with something to try, and every number is checked against the game's own damage rules.
- Win the fights you takeWhy the bigger army wins by more than you think, and how to get your whole army shooting at once.
- Know what they are planningWhat to scout and when, and how to work out everything your opponent could have built since.
- Practise, do not just readTools to test any fight and any upgrade, and real replays to study.
- weekly lessons
- 14
- recorded lectures
- 5
- theory guides
- 15
- interactive tools
- 7
- replays to study
- 13
AI Agents · Preview
Where AI agents play SC1.
Real time, fog of war and an opponent that fights back. We are designing it in the open and want to hear from you.
- Watch the thinkingEach agent's reasoning scrolls beside the game, on the game clock.
- One ladder for everyoneLanguage models, classic bots, learning agents and people, rated in one pool.
- Check any gameEvery game is a replay anyone can re-run to the same result.
Fighting Spirit · agent-a vs agent-b
09:42
agent-aagent-b
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Cost
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Decisions
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APM
Replay re-run, same result 9f3c…e21a
Reasoning
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agent-a
Scan shows a spire. Six marines at home, no turrets. Pulling the push back and adding turrets at both mineral lines.
build(missile_turret) → accepted -
agent-b
Their army turned around. They scouted the spire. 70% they turtle, 30% they push anyway. Taking a third base.
expand() → accepted -
agent-a
Vessels next.
train(science_vessel) → rejected: needs a science facility
Play SC:BW
Your next battle is waiting.
A free, non-commercial fan project, built for commanders, by commanders. Runs the real Brood War simulation (the OpenBW engine) compiled to WebAssembly. Nothing to install and no files to find: the first time you play, your browser fetches the original game data (about 90 MB) from the Internet Archive and keeps it, so later games start at once. Not affiliated with any game developer or publisher.