Direct connect over UDP 27015; the list runs through Steam (gamedig protocol=valve)
#join over UDP 27015#the list runs through Steam
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Free to play · Source
No More Room in Hell workshop
Hardcore co-op zombie survival · Co-op zombie survival / realistic
Player tools indexed: 5
Admin consoles: 7
No More Room in Hell hosting in short: a Source-engine dedicated server (appid 317670, native on Windows and Linux, no Wine) fetched anonymously with SteamCMD. The entry point is srcds.exe on Windows or srcds_run on Linux, started with -game nmrih. Only one join port is needed: UDP 27015 (the official FAQ lists it as required and it is also the A2S query port); TCP 27015 is needed only if you use rcon, per the official wording, because RCON shares the game port and there is no separate admin port. Two more exist: UDP 27005 (+clientport) and UDP 27020 (+tv_port for SourceTV, which AMP disables by default via -nohltv). Configuration lives in nmrih/cfg/server.cfg, whose last lines exec banned_ip.cfg and banned_user.cfg from the same folder. Mind the version split: release 1.15 (2026-09-01) upgraded the engine, added 64-bit support and made Vulkan the default renderer on Linux, and the official announcement states that Steam Networking was added so port forwarding is no longer required - while the official port-forwarding requirement in the FAQ was written in 2012. This site shows both official statements side by side with their dates and picks neither (the announcement wording belongs to a client update note; dedicated-server inbound was not verified). Do not confuse this game with No More Room in Hell 2, which is a different paid title with its own appid; what is registered here is the classic free game (client appid 224260).
Player tools (5)
Instant interactive calculations and recipe plannersIncludes the official FAQ entry about an empty list and the 1.15 port-forwarding change
#six official FAQ entries#1.15 changed the forwarding story
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No official hardware spec exists, so nothing is prefilled; only verifiable facts are registered
#no official server spec#three rate pairs
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Two anchors (1.15 and 1.14.2), two minute-level corroborations, and the -beta previous rollback
#two anchors: 1.15 and 1.14.2#corroborated to the minute
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Workshop support is officially confirmed; how Metamod/SourceMod install works and how sm_ keys are tiered
#Workshop officially confirmed#Metamod and SourceMod
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Server admin and config generation (7)
Config files, startup scripts and command wizards for running a serverThe 8-player cap agrees across two upstreams; rate/updaterate/cmdrate are validated in pairs
#8 players is an upstream consensus#tickrate versus updaterate
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Three ports, the official TCP/UDP split and RCON sharing 27015
#three ports as one group#RCON shares 27015
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UDP 27015 required, TCP 27015 only for rcon, with the 1.15 wording shown alongside
#TCP only for rcon#the 1.15 wording alongside
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Anonymous login for 317670, with -beta previous to roll back to 1.14.2
#anonymous fetch of 317670#roll back with -beta previous
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Three full command lines side by side with per-flag variants
#three command lines side by side#two cfg loading mechanisms
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79 keys merged from three sources and tiered; the NMRiH-specific keys are first class
#79 keys graded from three sources#the NMRiH-specific keys
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Command forms for both the listen-server and dedicated-server paths
#listen and dedicated paths#no invented command list
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No More Room in Hell Ports & Protocols
| Port | Protocol | Purpose |
|---|---|---|
| 27015 | UDP | The game port and the A2S query port; the official FAQ lists it as required |
| 27005 | UDP | The client port (+clientport) |
| 27020 | UDP | The SourceTV port (+tv_port); AMP disables SourceTV by default via nohltv |
FAQ
- Which No More Room in Hell server-admin tools are available?
- We list 7 tools for No More Room in Hell: Capacity and rate budget, Port matrix, Firewall rules, Install and deploy, Launch parameters, server.cfg generator, Console and rcon commands. All of them run straight in your browser.
- Which ports does No More Room in Hell need open?
- No More Room in Hell defaults to 27015/UDP, 27005/UDP, 27020/UDP. Use the actual instance configuration and allow only the listed protocols and ports. Check the host firewall, router forwarding and game visibility settings.
- How do I install a dedicated No More Room in Hell server?
- Install it with SteamCMD — the dedicated server app id for No More Room in Hell is 317670, so +app_update 317670 validate downloads or updates it. Config files usually live at nmrih/cfg/server.cfg, nmrih/cfg/banned_ip.cfg, nmrih/cfg/banned_user.cfg.
- Do these tools cost anything or need installing?
- No. Everything runs in the page: no install, no sign-up, no cost. Enter your values and the result appears instantly, and you can copy the generated configs and commands with one click.