Csgo Multi 1v1

CS:GO Sourcemod plugin to create multi-1v1 arena servers
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Build status GitHub Downloads Discord Chat

Status: Supported.

The multi1v1 plugin sets up any number of players in 1v1-situations on specially made maps and they fight in a ladder-type system each round. The winners move up an arena, and the losers go down an arena. Players choose between specific round types (for example: "rifle", "pistol", "awp"), and the plugin automatically spawns and gives players the appropriate weapons each round start.

Also see the AlliedModders thread and the the wiki for more information.


  • Round types: there are 3 round types: rifle, pistol, and awp
  • Player selection: players can select to allow pistol and awp rounds or ban them, rifle rounds are always allowed
  • Player preference: players can also select a preference of round type, if player preferences match they will play that type
  • Weapon selection: players can select their primary (i.e. their rifle) and their pistol
  • Armor on pistol rounds: helmets are taken away, and kevlar is also taken away if the player selected an upgraded pistol
  • ELO ranking system: optionally, player statistics can be stored in a database, see below for details

For plugin developers

Check the multi1v1.inc file to see what natives and forwards are avaliable to tweak the behavior of the plugin in more sophisticated ways.

Extra plugins

Sometimes it's easier to add something in a seperate plugin than add more convars, thus some features may be in support plugins. These are all optional.

  • multi1v1_flashbangs: if both players in an arena say "yes" to getting flashbangs, a flashbang is given to each player
  • multi1v1_kniferounds: adds unranked knife rounds


Stable releases are in the GitHub Releases section.

I strongly recommend using the Updater plugin which can automatically update the plugin for bug fixes. Any changes made through an automatic update will be backwards compatible.

You may also download the latest development build if you wish. If you report any bugs from these, make sure to include the build number (when typing sm plugins list into the server console, the build number will be displayed with the plugin version).



Sourcemod 1.9 or later.


Download the archive and extract the files to the game server. From the download, you should have installed the following (to the csgo directory):

  • addons/sourcemod/plugins/multi1v1.smx
  • addons/sourcemod/configs/multi1v1_weapons.cfg
  • addons/sourcemod/translations
  • cfg/sourcemod/multi1v1


The file cfg/sourcemod/multi1v1/multi1v1.cfg will be autogenerated when the plugin is first run and you can tweak it if you wish.

You may also tweak the values in cfg/sourcemod/multi1v1/game_cvars.cfg, which is executed by the plugin each map start.

Here is a brief list of some cvars available. See the auto-generated cfg/sourcemod/multi1v1/multi1v1.cfg file for descriptions.

  • sm_multi1v1_autoupdate: whether the plugin attempts to use the auto-updater plugin
  • sm_multi1v1_pistol_behavior: what types of pistols (if any) should be given in non-pistol rounds
  • sm_multi1v1_roundtime: length of the round
  • sm_multi1v1_use_database: whether the plugin attempts to store player statistics (e.g. elo ranking) in a MySQL database
  • sm_multi1v1_verbose_spawns: whether the plugin will dump information on player-spawn clustering on map starts

addons/sourcemod/configs/multi1v1_weapons.cfg contains the list of weapons that are available under the rifle and pistol menus. You are free to add or remove weapons from this as long as they match the correct format. Note that the team part is only for making sure the player gets the correct weapon skin, otherwise it has no effect.

More help on setting up the stats system

There is a wiki page that explains how to setup the stats system with the provided components.


The build process is managed by my smbuilder project. You can still compile multi1v1.sp without it, however.


I have a workshop collection of maps I know of. The "am_" prefix stands for aim_multi, reflecting the fact that the maps are similar to aim_ maps but there are multiple copies of them.

Note: standard maps (de_dust2, etc.) or aim maps (aim_map, etc.) will not work with this plugin. Maps must be custom-made with multiple arenas.

Guidelines for making a multi-1v1 map:

  • Create 1 arena and test it well, and when are you happy copy it
  • Create a bunch of arenas, I'd recommend making at least 16
  • The players shouldn't be able to see each other on spawn
  • Each group of spawns (e.g. all CT spawns in arena 1) must be within 1600.0 units of each other, this is required to cluster spawns into the arenas and not configurable
  • Ensure that the arenas are sufficiently far apart so players don't hear shooting in other arenas
  • If you want to edit your map, it's easiest to delete all but 1 arena and re-copy them. Be warned this can cause issues with the game's lighting and clients may crash the first time they load the new map if they had downloaded the old one previously
  • You should avoid areas where it's easy for 1 player to hide; ideally they should have to cover multiple angles if they sit in one spot
  • Here is an example map: am_grass2.vmf
  • The cvar sm_multi1v1_verbose_spawns can be set to 1 to log information about how the spawns were partitioned into arenas on map changes

Using the statistics database

Note: SQLite is not supported. Only MySQL is.

You should add a database named mult1v1 to your databases.cfg file like so:

    "driver"            "mysql"
    "host"              ""   // localhost works too
    "database"          "game_servers_database"
    "user"              "mymulti1v1server"
    "pass"              "strongpassword"
    "timeout"           "10"
    "port"          "3306"  // whatever port MySQL is set up on, 3306 is default

To create a MySQL user and database on the database server, you can run:

CREATE DATABASE game_servers_database;
CREATE USER 'mymulti1v1server'@'' IDENTIFIED BY 'strongpassword';
GRANT ALL PRIVILEGES ON game_servers_database.multi1v1_stats TO 'mymulti1v1server'@'';

Make sure to change the IP, the username, and the password. You should probably change the database as well, especially if you already have one set up you can use.


mysql> describe multi1v1_stats;
| Field        | Type        | Null | Key | Default | Extra |
| accountID    | int(11)     | NO   | PRI | 0       |       |
| serverID     | int(11)     | NO   | PRI | 0       |       |
| auth         | varchar(64) | NO   |     |         |       |
| name         | varchar(64) | NO   |     |         |       |
| wins         | int(11)     | NO   |     | 0       |       |
| losses       | int(11)     | NO   |     | 0       |       |
| rating       | float       | NO   |     | 1500    |       |
| lastTime     | int         | NO   |     | 0       |       |
| recentRounds | int         | NO   |     | 0       |       |

Note that the accountID field is what is returned by GetSteamAccountID, which is "the lower 32 bits of the full 64-bit Steam ID (referred to as community id by some) and is unique per account."

auth is the steam ID auth string, and the lastTime field is the last time the player connected to the server. The time comes from GetTime, which returns the "number of seconds since unix epoch".

recentRounds is simply incremented each time the player completes a round. This can be used, for example, to check the rounds played on a daily basis and lower ratings if a player didn't play a certain number of rounds.

Clientprefs Usage/Cookies

Player choices (round type preferences, weapon choices) can be saved so they persist across maps for players (via the SourceMod clientprefs API). Installing SQLite should be sufficient for this to work.

If you have a game-hosting specific provider, they may already have SQLite installed

Custom Round Types

There are two ways to add your own round types: through writing another plugin using the forward and natives in multi1v1.inc, and defining a round type in a config file.

Adding round types via a config file

This is the simpler approach, but you are fairly restricted in the logic you can use. The file to edit is addons/sourcemod/configs/multi1v1_customrounds.cfg.

Here is an example file that adds a scout round and a knife round:

        "name"      "Scout"
        "ranked"        "1"
        "ratingFieldName"       "scoutRating"
        "optional"      "1"
        "enabled"       "1"
        "armor"     "1"
        "helmet"        "1"
            "weapon_knife"      ""
            "weapon_ssg08"      ""
        "name"      "Knife"
        "ranked"        "0"
        "optional"      "1"
        "enabled"       "1"
        "armor"     "1"
        "helmet"        "1"
            "weapon_knife"      ""

Adding round types via another plugin

Using the natives in multi1v1.inc, you can write more complex logic into a round type. To get a simple example, check multi1v1_kniferounds.sp. The key is calling Multi1v1_AddRoundType within the Multi1v1_OnRoundTypesAdded forward.

typedef RoundTypeWeaponHandler = function void (int client);
typedef RoundTypeMenuHandler = function void (int client);

// Registers a new round type by the plugin.
native int Multi1v1_AddRoundType(const char[] displayName,
                                 const char[] internalName,
                                 RoundTypeWeaponHandler weaponsHandler=Multi1v1_NullWeaponHandler,
                                 bool optional=true,
                                 bool ranked=false,
                                 const char[] ratingFieldName="",
                                 bool enabled=true);

Note that the multi1v1 plugin will

  • create and update the column for the round-type stats if you set the round type as ranked and give a non-empty string as the ratingFieldName parameter ( note that these columns are only created on database-connections)
  • create and update the "allow x rounds" clientprefs cookie for you (it uses the interalName when naming the cookie)

Discord Chat

A Discord channel is available for general discussion.

Contributions and Suggestions

First, check the issue tracker to ask questions or make a suggestion. If you have a suggestion you can mark it as an enhancement.


  • Create a fork on github, clone that, then create a branch to work on git checkout -b mybranchname
  • Follow the code-style already used as much as you can
  • Submit a pull request when you're happy with the new feature/enhancement/bugfix
  • Favor readability and correctness over all else
  • For a moderately advanced feature, it may be simpler to write it as a plugin that uses the multi1v1 natives from multi1v1.inc
  • Keep it simple, stupid
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