The numbers the engine enforces. The commissioner can change them.
| Salary cap | $255M |
| Minimum payroll | 90% of the cap |
| Minimum / maximum salary | $795K / $60M |
| Longest contract | 6 years |
| Roster size | 46 to 53 |
| Regular season | 18 weeks, 17 games, 1 bye |
Each GM runs one NFL team. Releasing a player clears his salary from your cap immediately. Any signing that would put you over the cap or past the roster limit is refused. Scores are reported by the GMs and confirmed by a commissioner. Everything a commissioner changes is written to the audit log.