This indicates the file includes seven "Downloadable Content" expansions (new maps, scenarios, or trains).
Sites hosting .rar files for games are frequently bundled with ads, trackers, or malicious software. Always use updated antivirus software if you are browsing these sources.
This confirms the software is the North American region version.
You can back up your progress to Nintendo's servers.
You avoid the risk of bricking your console or catching a virus.
When you see files like "Download Railway Empire Nintendo Switch Edition [7DLC][US] NSP rar," you are looking at digital copies of games meant for modified consoles. 🎮 What These Files Are