This mod for Farming Simulator 25 allows upgrading existing production buildings step by step instead of cluttering the map with multiple copies of the same factory. It works the same way in single-player and multiplayer.

Throughput can be raised through ten levels: 1x, 2x, 3x, 5x, 10x, 20x, 30x, 40x, 50x and 60x. Each additional +1x of throughput costs 5% of the factory's original purchase price, so upgrades are paid progressively as the business grows. Storage capacity and discharge speed scale with the same multiplier, and storage synchronization is implemented in an MP-safe way.

Operating costs also scale with throughput, preserving the base cost per produced unit — higher levels increase output volume without making production cheaper per unit, keeping game balance intact.

Multiplayer security is handled server-side: upgrade payments, ownership validation, saving and level synchronization are all server-authoritative, preventing client-side exploits and desynchronization between players.

Three base-game productions are excluded and cannot be upgraded: the playground maker hall, the wagon builder and the piano manufacture. The package (FS25_FactoryUpgradeMP_60x.zip, version 1.0.0.0) is lightweight at about 93 KB and available for PC/MAC.