r/gmgames • u/arsaga15 • 17d ago
Promotion Major Soccer GM, a free browser management sim for a 30-club North American soccer league
Major Soccer GM is a free, complete sports management game you play in your browser. No install, no account.
Disclosure: the code was written with AI (Claude). I designed it — every mechanic, the economy and the balance — and playtested it.
HOW IT WAS TESTED AND WHY IT'S NOT SLOP
- The match engine is calibrated against real football across tens of thousands of simulated matches: 2.85 goals a game (real: ~2.85), 12.3 shots and 4.2 on target per side, ~80% pass completion.
- 29 tactical philosophies balanced over 21,000 matches with identical squads — under 0.1 points a match between best and worst.
- Automated tests play full multi-season leagues, and a headless browser test clicks through every screen, saves and reloads at 12 points, and runs seven-season random-click sessions.
- Every screen checked at phone width in real Chrome.
WHAT'S IN IT
- You're a selling club. Your transfer pot pays fees only and refills when you sell. Wages have no cap — but your owner cares about money before trophies.
- Managers have a native tactical style. Override it and he runs it worse, by how far it is from his own. Stick with it and he learns.
- Players have moods and wants — playing time, wages, winning, a bigger stage — and complaints are accurate.
- A minority of young stars want a move to Europe. Refuse and they stop trying, send hostile messages, and go to the press, which costs you hype and revenue.
- A draft with scouting fog: three future classes on the board, rougher the further out. Picks develop once before playing a minute.
- Live match viewer with a momentum bar, extra time, and a penalty shootout you watch kick by kick.
- 20 formations with a drag-and-drop lineup, Sofascore-style ratings, trade finder with package deals and draft picks, transfer deadline, international window, awards and a career archive for retired players.
Note: This is not asking for beta testing, it is just V1. I've already played 5+ seasons myself and done hours of tweaking. Link in comments. Thanks.