How to play Glass Jaw
By the Glass Jaw development team · Updated August 28, 2026
Two ways to play
The League is the main game: one shared world where every rival is managed by a real person, fights are booked and fought in real time, and camps, callouts, and title pictures move whether or not you are online. It runs in your browser at playglassjaw.com and in the Glass Jaw app for iPhone and Android, on the same account.
The solo career sim at playglassjaw.com/solo is the original single-player Glass Jaw: the same fighter creation and fight engine against a simulated field, week by week, saved in your browser with no account. The steps below apply to both.
1. Create your fighter
Choose a name, home city, weight class, fighting background, techniques, appearance, and starting attributes. Your background shapes the skills and moves you begin with, while your bonus points let you round out weaknesses or lean into a specialty.
2. Build a career one day at a time
In the League the calendar is the real one: train today, book a fight, and be in the arena when the bell rings. In the solo sim each advance moves the calendar a week. Either way, use the time between fights to develop your fighter, recover, and prepare for the next opportunity. Your fighter ages during the career, so every training choice and matchup has a cost.
3. Accept the right fight
Fight offers show the opponent and timing before you commit. Winning improves your record and opens harder competition as you move from the amateur circuit to the regional level and then the World Fighting League.
4. Choose a plan and fight
Before a bout, choose how your fighter should approach it. Fights can end by knockout, technical knockout, submission, or the judges’ scorecards. Styles, skills, techniques, fatigue, and the matchup all influence what happens.
5. Chase the belt and leave a legacy
Climb the rankings, earn a title opportunity, defend the championship, and decide when to retire. A completed career records its results and can produce a shareable retirement card.