Source-checkedGame modes & minigames

OpenSource: Counter-Strike: Source Gamemode

by Saint MightyX3N ✝ · for Garry's Mod

Join the Official Server here: Server is being reworked OpenSource — Counter-Strike: Source, rebuilt as a Garry's Mod gamemode OpenSource is Counter-Strike: Source inside Garry's Mod, made to be…

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Steam WorkshopSource

About OpenSource: Counter-Strike: Source Gamemode

From Steam Workshop

Join the Official Server here: Server is being reworked OpenSource — Counter-Strike: Source, rebuilt as a Garry's Mod gamemode OpenSource is Counter-Strike: Source inside Garry's Mod, made to be…

Join the Official Server here: Server is being reworked

OpenSource — Counter-Strike: Source, rebuilt as a Garry's Mod gamemode

OpenSource is Counter-Strike: Source inside Garry's Mod, made to be modified. The HUD, menus, weapon stats, prices, sounds and text are taken from CS:S's own files — it looks, sounds and plays like the real thing, and every part can be changed with a few lines of Lua or the online module builder.

Requires Counter-Strike: Source to be mounted. Plays on any de_ or cs_ map.

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Gameplay

  • Full round system, CS:S economy, bomb defusal & hostage rescue
  • All 24 CS:S guns + grenades with accurate CS:S behaviour (recoil, penetration, silencers, burst, scopes…)
  • CS:S movement, wall penetration, map loadouts (game_player_equip)

Restored Cut Content from CS:S

Features Valve removed from CS:S are back as optional extras:

  • VIP / Assassination mode (os_vipmode) — the classic as_ mode cut from CS:S. One CT is the VIP. CTs escort him to a safety zone, Ts try to kill him.
  • Dynamic weapon pricing (os_dynamicprices) — the 2005 market system. Prices rise/fall every map based on what your server buys.

New Features

  • Modes: Deathmatch, Gun Game, Arena + full modes system (!setmode) for Hosties, Deathrun, etc.
  • Match tools: Warmup + ready-up, knife round, overtime, timeouts, RTV / nominate / votekick
  • Practice mode — endless money, grenade trajectories, !noclip, !rethrow, save/load positions
  • Achievements & stats (F6) — all 142 CS:S achievements + dominations/revenge
  • Better bots: cover while reloading, dedicated snipers, full radio orders, take over bots with E
  • External weapon support (TacRP, TFA, ArcCW…), F4 admin menu, map vote, custom zones, MOTD

Made to be modified

Everything is configurable in sh_config.lua. Register new guns, change the HUD, add objectives, or create full modes. 40+ OS_ hooks.

Don't want to write Lua? Use the OpenSource Module Builder: https://opensource.x3n.dk/index.php

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Keys

[table] [tr][th]Key[/th][th]Action[/th][/tr] [tr][td]B[/td][td]Buy menu[/td][/tr] [tr][td]M / F2[/td][td]Team menu[/td][/tr] [tr][td]G[/td][td]Drop weapon[/td][/tr] [tr][td]N[/td][td]Night vision[/td][/tr] [tr][td]Z / X / C[/td][td]Radio menus[/td][/tr] [tr][td], / .[/td][td]Buy ammo[/td][/tr] [tr][td]E[/td][td]Defuse / hostages / take bomb / take over bot[/td][/tr] [tr][td]F1[/td][td]MOTD[/td][/tr] [tr][td]F4[/td][td]Admin menu[/td][/tr] [tr][td]F6[/td][td]Stats & Achievements[/td][/tr] [/table]

Server setup

Set gamemode to opensource. Run nav_generate on maps without a navmesh. All settings are in the F4 menu or os_* convars (os_vipmode, os_dynamicprices, os_warmup, os_practice, etc.).

Counter-Strike: Source and its assets belong to Valve. OpenSource uses the content from your own mounted copy of CS:S and does not redistribute it.

X3NAddons Discord: https://discord.gg/USukDAH7Cu

If you enjoy the gamemode, Rate Up 👍 and Favorite ⭐!

NOTE: CSGO and DODs Gamemodes need an update to make sure all features match their game as some wont out of the box, they may still work especially csgo should work as css and csgo share the same feature set overall, but dods with like vip might not work as expected, and other things

Highlights

From source data

Footprint

Rated a light load on a server.

Last update

Its author last shipped an update 1d ago.

OpenSource: Counter-Strike: Source Gamemode on Nxeon

From our catalogue
One-click install
Supported on Nxeon Garry's Mod servers. We download it from Steam Workshop, place it, and restart the server.
Server load
light
Smallest plan we suggest
Garry's Mod — 2 GB (2 GB RAM). This follows our own load rating above, not a benchmark.
Latest build
2026-10-15, released 2026-10-15

Game versions by loader

LoaderGame versionsNewest
Workshop

From 4 recorded builds of OpenSource: Counter-Strike: Source Gamemode.

Recent builds

BuildReleasedGame versionsLoaders
2026-10-152026-10-15n/aWorkshop
2026-10-112026-10-11n/aWorkshop
2026-10-092026-10-09n/aWorkshop
2026-10-082026-10-08n/aWorkshop

Run OpenSource: Counter-Strike: Source Gamemode on a Garry's Mod server

Pick a server or deploy a new one above; it is installed in one click.

What kind of mod it is

From the catalog
Listed on Steam Workshop as “Balance”

Game modes & minigames

Game modes, minigames and competitive formats for your server.

Compatibility

Game
Garry's Mod

Verified at the source

  • ✓Steam WorkshopOfficial listing, checked 2026-10-16Open ↗
  • ✓AuthorSaint MightyX3N ✝, as published on Steam Workshop
  • ✓LicenseNot published by the sourceFree

OpenSource: Counter-Strike: Source Gamemode, answered

Generated from the mod’s own source data.

Is it free?

Yes. OpenSource: Counter-Strike: Source Gamemode is free to download from Steam Workshop.

How do I add it to my Nxeon server?

Use “Add to a server” on this page, or open NxLabs from your dashboard. We install it, restart your server and switch it on.

NxLabs

Run OpenSource: Counter-Strike: Source Gamemode on a Garry's Mod server.

Deploy in about a minute from $3.99 a month, then add OpenSource: Counter-Strike: Source Gamemode in one click.