Glass Jaw: the online MMA career sim

Build your fighter

Choose a weight class, martial arts background, techniques, appearance, and attributes. Your choices shape how your fighter develops.

Climb a living league

Start as an unknown amateur, earn contracts, join a fight camp, and rise through the regional circuit toward the WFL title.

Work the corner

Set the game plan, manage aggression, and follow real-time play-by-play through knockouts, submissions, and scorecards.

Your road to the belt

• Train: Spend XP and sharpen techniques.
• Get booked: Accept fights and study opponents.
• Fight live: Make calls from the corner.
• Rise: Build a record and chase gold.

Is Glass Jaw free to play?

Yes. You can create a fighter and play The League free in your browser, on iPhone, or on Android.

Are the other fighters real players?

Yes. The League is one shared world of real managers. Rankings and fight cards continue moving whether or not you are online.

Do I need an account before I start?

No. Build your fighter first. Glass Jaw creates a guest career when you commit, and you can secure it afterward.