This building determines how many trains you can actively use at any one time (excluding bonus trains, the Career Engine, the Pollux, and the Magnus). By upgrading the Engine house you can operate more trains, haul more goods or passengers, and earn more money. However, the building can only be upgraded to a certain level within each era, as per the table below:
Era 1: 7
Era 2: 11
Era 3: 15
Era 4: 19
Era 5: 22
Era 6: 25
This building always starts at level 1, irrespective of the era you start the round on. Any additional trains owned can be stored within the Museum.
On x2 speed worlds the upgrade time is reduced to 50% and on x4 worlds to 25%.
Level 1: Upgrade Cost, Upgrade Time, Prestige, Maximum Active Trains 1, Maximum Trains Owned 5
Level 2: Upgrade Cost $5,000, Upgrade Time 00:00:05, Prestige 2, Maximum Active Trains 2, Maximum Trains Owned 10
Level 3: Upgrade Cost $12,000, Upgrade Time 00:00:30, Prestige 5, Maximum Active Trains 3, Maximum Trains Owned 15
Level 4: Upgrade Cost $45,000, Upgrade Time 00:03:00, Prestige 10, Maximum Active Trains 4, Maximum Trains Owned 20
Level 5: Upgrade Cost $200,000, Upgrade Time 01:00:00, Prestige 15, Maximum Active Trains 5, Maximum Trains Owned 25
Level 6: Upgrade Cost $400,000, Upgrade Time 03:00:00, Prestige 20, Maximum Active Trains 6, Maximum Trains Owned 30
Level 7: Upgrade Cost $600,000, Upgrade Time 06:00:00, Prestige 25, Maximum Active Trains 7, Maximum Trains Owned 35
Level 8: Upgrade Cost $850,000, Upgrade Time 08:00:00, Prestige 30, Maximum Active Trains 8, Maximum Trains Owned 40
Level 9: Upgrade Cost $1,200,000, Upgrade Time 12:00:00, Prestige 35, Maximum Active Trains 9, Maximum Trains Owned 45
Level 10: Upgrade Cost $1,750,000, Upgrade Time 14:00:00, Prestige 40, Maximum Active Trains 10, Maximum Trains Owned 50
Level 11: Upgrade Cost $2,200,000, Upgrade Time 16:00:00, Prestige 45, Maximum Active Trains 11, Maximum Trains Owned 55
Level 12: Upgrade Cost $2,750,000, Upgrade Time 19:00:00, Prestige 50, Maximum Active Trains 12, Maximum Trains Owned 60
Level 13: Upgrade Cost $3,300,000, Upgrade Time 20:00:00, Prestige 60, Maximum Active Trains 13, Maximum Trains Owned 65
Level 14: Upgrade Cost $3,800,000, Upgrade Time 21:00:00, Prestige 70, Maximum Active Trains 14, Maximum Trains Owned 70
Level 15: Upgrade Cost $4,500,000, Upgrade Time 23:00:00, Prestige 80, Maximum Active Trains 15, Maximum Trains Owned 75
Level 16: Upgrade Cost $5,300,000, Upgrade Time 24:00:00, Prestige 90, Maximum Active Trains 16, Maximum Trains Owned 80
Level 17: Upgrade Cost $6,000,000, Upgrade Time 24:00:00, Prestige 100, Maximum Active Trains 17, Maximum Trains Owned 85
Level 18: Upgrade Cost $6,500,000, Upgrade Time 24:00:00, Prestige 110, Maximum Active Trains 18, Maximum Trains Owned 90
Level 19: Upgrade Cost $7,000,000, Upgrade Time 24:00:00, Prestige 120, Maximum Active Trains 19, Maximum Trains Owned 95
Level 20: Upgrade Cost $7,500,000, Upgrade Time 24:00:00, Prestige 130, Maximum Active Trains 20, Maximum Trains Owned 100
Level 21: Upgrade Cost $8,000,000, Upgrade Time 24:00:00, Prestige 140, Maximum Active Trains 21, Maximum Trains Owned 105
Level 22: Upgrade Cost $8,500,000, Upgrade Time 24:00:00, Prestige 150, Maximum Active Trains 22, Maximum Trains Owned 110
Level 23: Upgrade Cost $9,000,000, Upgrade Time 24:00:00, Prestige 160, Maximum Active Trains 23, Maximum Trains Owned 115
Level 24: Upgrade Cost $9,500,000, Upgrade Time 24:00:00, Prestige 180, Maximum Active Trains 24, Maximum Trains Owned 120
Level 25: Upgrade Cost $10,000,000, Upgrade Time 24:00:00, Prestige 200, Maximum Active Trains 25, Maximum Trains Owned 125
