Build the club. Own the season.
Diamond Mogul is a deterministic baseball management simulation. Draft a fictional league, set your lineups, negotiate contracts, work the trade market, and simulate every game from preseason through the championship.
Deterministic engine
Every game stores a 64-bit seed and engine version. The same roster, lineup, park, rules, and seed reproduce the same play-by-play record.
Auditable results
Completed games, box scores, transactions, and ledger entries are durable. Game completion is atomic and idempotent.
Rules-driven leagues
Roster limits, DH mode, trade deadlines, playoffs, finance, and simulation settings live in a versioned ruleset per save.