About OpenSource: Counter-Strike: Source Gamemode
From Steam WorkshopJoin 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 dataFootprint
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
| Loader | Game versions | Newest |
|---|---|---|
| Workshop |
From 4 recorded builds of OpenSource: Counter-Strike: Source Gamemode.
Recent builds
| Build | Released | Game versions | Loaders |
|---|---|---|---|
| 2026-10-15 | 2026-10-15 | n/a | Workshop |
| 2026-10-11 | 2026-10-11 | n/a | Workshop |
| 2026-10-09 | 2026-10-09 | n/a | Workshop |
| 2026-10-08 | 2026-10-08 | n/a | Workshop |
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 catalogGame 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
