Railway Empire: Great Britain & Ireland
Developer: Gaming Minds Studios
Publisher: Kalypso Media
Railway Empire: Great Britain & Ireland is the best DLC to pick up in my opinion. Not only are we introduced to a brand new country, but we also have ten new locomotives, 45 cities, new city assets and new music to match the locale. The overall experience also feels more accessible and achievable with no curveball tasks which surprise you as you juggle your limited time available.
Railway Empire - DLC Great Britain & Ireland - Announcement Trailer (US)