How to Add Custom Maps to a No More Room in Hell Server

There are two ways to add custom maps to a No More Room in Hell server. For Steam Workshop maps, type workshop_download <id> (or workshop_download_collection <id> for a whole collection) in the server console and let the server fetch them. For maps from other sites, upload the .bsp file to nmrih/maps. Either way, add the map names to your map cycle file, and make sure players can get the files when they join.

Workshop or manual upload?

Workshop is less work and keeps maps updated with one command. Manual upload gives you full control. Many servers use both.

Update 1.15 in September 2026 fixed Steam Workshop downloads on dedicated servers, so if Workshop commands failed for you on an older build, update the server and try again.

Method 1: Workshop maps

Find the map's ID

Open the map on the No More Room in Hell Workshop in Steam. The ID is the number at the end of the page address, after ?id=. If you are already subscribed, it is also the folder name under steamapps\workshop\content\224260\ on your PC.

Download it to the server

In the server console:

workshop_download 2914838562

The server downloads the map, which can take a while for large ones. Be patient and watch the console. Then check it arrived:

maps nmo

lists the installed Objective maps, including Workshop ones. Use maps nms for Survival maps.

Add a whole collection

If you or your community keep maps in a Workshop collection, download all of them at once:

workshop_download_collection 3043068173

Replace the number with your collection's ID.

Keep them updated

When map authors push updates, run:

workshop_update

Rules for Workshop maps

• Do not copy Workshop maps into nmrih/maps. The server keeps them in its own Workshop storage and tracks them in nmrih/workshop_maps.txt. Moving them breaks the tracking.
• Do not edit workshop_maps.txt by hand. Use the console commands.

On a GamezServers server, type these commands into the live console in the panel. Nothing needs to be uploaded.

Method 2: Upload .bsp files

1. Download the map from wherever it is published. You want the .bsp file, plus any extra files the author includes (sounds, materials, models), keeping their folder structure.
2. Stop the server.
3. Upload the .bsp into nmrih/maps. Extra content goes into the matching folders under nmrih (for example nmrih/materials, nmrih/sound).
4. Start the server and run maps nmo or maps nms to confirm it is there.

On our servers, use the file manager for single maps and SFTP for map packs, which is faster for many files.

Step 3: Add maps to the map cycle

Pick which cycle file the server uses in nmrih/cfg/server.cfg:

mapcyclefile "mapcycle.txt"

NMRiH ships three you can start from:

Open the file you chose and add your custom maps by name, one per line, without .bsp:

nmo_broadway
nmo_chinatown
nmo_shoreline
nms_northway
nmo_mycustommap

Test each custom map once with changelevel nmo_mycustommap before leaving it in rotation. Some older maps do not play well with recent versions; the 1.15 notes even added sv_ammobox_entity_legacy for maps that break with newer ammo box behavior.

Step 4: Get the map to players

This is the part that makes or breaks a custom map night. A player who lacks the map has to download it, and how depends on the method:

Workshop maps: players download them through Steam.

Uploaded maps: the server can send them itself, or you can use a web server.

For FastDL, put the map files on a web host in a maps folder (compressed .bsp.bz2 files are common for speed), then set sv_downloadurl to the folder above maps. A community setup guide recommends turning off direct downloads from the game server and using FastDL or the Workshop instead.

The simplest option for a private group: share a Workshop collection link and ask everyone to subscribe before map night.

Troubleshooting

Keep it tidy

Big map packs bloat the server and the map vote. Keep a rotation of maps your group actually plays, and remove ones nobody votes for. Map voting itself comes from SourceMod, covered in how to become admin on a No More Room in Hell server. A one click backup before adding a large pack lets you roll back if something breaks.

Host it the easy way

A No More Room in Hell server from GamezServers gives you a live console for workshop_download and workshop_update, a file manager and SFTP for nmrih/maps and the map cycle files, and the starting map in the panel. Auto update keeps the server on the current build after a restart, which matters for Workshop downloads. For the first time setup, see how to host a No More Room in Hell server.

FAQ

How do I add a Workshop map to my NMRiH server?

Type workshop_download followed by the map's Workshop ID in the server console, then add the map name to your map cycle.

Can I add a whole Workshop collection?

Yes. Use workshop_download_collection followed by the collection ID.

Where do custom map files go?

Uploaded .bsp files go in nmrih/maps. Workshop maps stay in the server's Workshop storage and should not be moved there.

How do players get my custom maps?

Workshop maps come through Steam. Uploaded maps download from the server, best through FastDL with sv_downloadurl.

How do I update Workshop maps on the server?

Run workshop_update in the server console.