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To create an automatic map cycle on a Counter-Strike 2 dedicated server, define a map group in game/csgo/gamemodes_server.txt, select it with mapgroup <groupname>, and choose the first map separately. The startup map only determines what loads first; the selected map group determines what can follow. This guide covers self-managed servers, hosting panels, custom maps, Workshop maps, game-mode settings, verification, and the failures that most often make a rotation appear broken.
What a CS2 map cycle does
A map cycle is the server’s ordered pool of maps. Steam Support defines it as the maps you want to play and the order in which they appear. When a map ends because of the configured time, round, or win limit, the server chooses the next eligible entry from that pool.
Three settings are easy to confuse:
- Initial map: the map loaded when the server starts or when you issue a map command.
- Map group: the named collection of maps available for rotation.
- Rotation rules: mode, round limits, time limits, win limits, voting, and administrative changes that determine when and how the next map is selected.
A command such as map de_ancient loads one map immediately. It does not create a persistent rotation. Likewise, selecting a map group without loading a valid initial map can leave the server on an unintended map until the next change.
Before you edit the server
Confirm the installation and build
Work inside the CS2 installation’s game/csgo/ tree. A typical dedicated-server layout contains the game files, configuration directories, and the gamemodes_server.txt file used for server-side game and map-group overrides. File locations differ between a self-managed installation and a provider’s panel, so use the provider’s file manager or SFTP root if the server is hosted remotely.
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CS2 conventions have changed from CS:GO. Do not assume that a tutorial requiring cfg/mapgroup_name.cfg or a retail mapcycle.txt file applies to your build. Current CS2 hosting practice uses map groups in gamemodes_server.txt; the exact KeyValues nesting should be copied from the file shipped with your server.
Back up the configuration
- Stop the server cleanly.
- Copy
game/csgo/gamemodes_server.txtto a dated backup, such asgamemodes_server.txt.2026-10-15. - Keep a second copy outside the server directory so a provider update or reinstall cannot overwrite your only working version.
Preserve Valve’s quotation marks, braces, indentation, and nesting. A single missing brace can cause the file to be ignored or can prevent the server from starting.
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Write down the exact internal name of every map you intend to use. The name is the map identifier used by the map or changelevel command, not necessarily the display name shown in a menu. For a built-in map, this may look like de_ancient; custom maps can use a longer identifier supplied by the map author or hosting panel.
- Remove entries for maps that are not installed on the server.
- Check spelling, underscores, and letter case against the actual map file or the provider’s map list.
- Decide whether the order is deliberately fixed or whether administrators and a vote system will choose among a larger pool.
Choose the first map independently
Set the initial map in the launch command, startup script, or hosting panel. For a self-managed server, a launch configuration commonly includes a +map argument, for example +map de_ancient. A panel usually exposes the same choice as “Start map,” “Initial map,” or a similar field.
The initial map and map group serve different purposes. If your group is named mg_weeknight, a startup sequence can conceptually be:
+mapgroup mg_weeknight +map de_ancientSome panels apply these values in their own order, and some require the map group to be selected in a separate “Map Group” control. Follow the panel’s displayed command preview when it differs from the example. After changing startup arguments, restart the server so the new values are actually passed to the process.
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Create a map group in gamemodes_server.txt
Use the file’s existing KeyValues shape
Open game/csgo/gamemodes_server.txt in a text editor that preserves plain text. Locate an existing map-group section supplied by your CS2 build and duplicate that structure rather than pasting a CS:GO-era recipe. Depending on the build, map groups may be nested under game-type and game-mode blocks; the surrounding hierarchy matters.
The following is an illustrative pattern, not a replacement for the nesting already present in your file. It shows the important relationship: one group name containing the exact map identifiers.
"mg_weeknight"
{
"maps"
{
"de_ancient" "1"
"de_anubis" "1"
"de_inferno" "1"
"de_nuke" "1"
}
}Keep the keys and value format used by the neighboring groups. If your file uses a different map-list representation, retain that representation and change only the group name and map entries. Do not add duplicate group names; the server cannot reliably distinguish two definitions with the same key.
Name the group clearly
Use a short name that explains its purpose, such as mg_weeknight, mg_competitive, or mg_customtest. The name is case-sensitive in practice, so use the identical spelling when selecting it from the console or panel. Avoid spaces and punctuation that your panel may sanitize.
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- Check that every opening brace has a matching closing brace.
- Check that every map entry is inside the intended group, not beside it.
- Save the file as plain text with its original filename and extension.
- Restart or reload according to your server’s documented configuration process.
If the server starts without recognizing the group, restore the backup and reapply the change by copying a known-good block. An apparently valid file can still be ignored when it is stored in the wrong game/csgo/ directory or saved with an extra extension such as .txt.txt.
Select the group and load the first map
Once the file is in place, open the server console or the provider’s console and select the group:
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mapgroup mg_weeknightThen load the starting map:
map de_ancientThe provider’s documentation may show the same pattern with a stock group such as mg_active. Substitute your own group name. A panel’s “Map Group” field sends the equivalent setting for you, but you still need to configure the initial map separately unless the panel combines both controls.
Record the command output. It should identify the selected group or otherwise show that the command was accepted. If the console reports an unknown group, the server has not loaded your definition: check the path, KeyValues nesting, spelling, and whether a restart was required.
Set the mode and rotation limits
The map group supplies the map pool; game-mode variables determine how the next map is initialized and when the current one ends. Valve’s game-mode documentation describes game_type, game_mode, and related settings as the controls that initialize the next map. Set these values before loading the map when possible.
Match the mode to the group
- Confirm that the selected
game_typeandgame_modecorrespond to the rules you want. - Check any mode-specific server configuration that is loaded after
gamemodes_server.txt; a later file can override an earlier value. - If a map opens with unexpected rules, inspect the effective mode values in the console and reload the map after correcting them.
Define when a map ends
Configure the round, time, and win limits appropriate to your server. Common server variables include time and maximum-round controls, while some modes use a win-limit or maximum-wins setting. Steam’s dedicated-server documentation explains that map changes are driven by these map-time or maximum-win conditions. Do not copy competitive limits into a casual rotation without checking the mode’s own defaults.
Keep the values in the configuration layer your server actually loads. A value entered interactively in the console may disappear on restart; a value in a mode-specific configuration may override a global setting. After changing limits, play or simulate enough rounds to confirm that the map changes at the expected threshold.
Verify the rotation before inviting players
Confirm the active group
Read the console after issuing mapgroup and after the first map loads. Make sure the displayed or logged group is your intended group, not a default supplied by the server or panel.
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Test every map directly
For each entry, use a direct load command:
map de_ancient
map de_anubis
map de_inferno
map de_nukeYou can also use changelevel <mapname> when you want to change the level without treating the command as a fresh server start. A direct-load failure is a map installation or naming problem, not a map-cycle problem. Remove or repair the failing entry before testing automatic rotation.
Observe a real transition
- Start on the chosen initial map.
- Use temporary, low round or time limits in a private test environment if you need to reach the end quickly.
- Let the map end naturally and watch the console for the next map.
- Confirm that the next map is one of the group entries and that its intended mode has been initialized.
- Restore production limits after testing.
Testing one direct load and one natural transition catches different errors. Direct loading proves that the server has the content; the transition proves that the group is selected and the end-of-map rules are active.
Use custom and Workshop maps safely
Local or custom map files
Steam Support requires a custom map to be installed in the dedicated-server directory before it can participate in a map cycle. Upload the map using the directory and format expected by your server build, restart or refresh the installation if required, and then test it with map <exact-name>. Only after that test succeeds should you add the name to the selected group.
Keep a record of the map version. Replacing a file with an incompatible revision can make a previously valid rotation fail after an update. If several maps come from different authors, check that their dependencies and required assets are present on the server, not only on your client.
Workshop maps
Workshop content must be downloaded or mounted by the server before the map can load. Current hosting instructions use these commands:
host_workshop_map <numeric_id>
host_workshop_collection <numeric_id>The first command requests one Workshop item; the second requests a collection. Replace the placeholder with the numeric Workshop ID. Providers may instead offer an add-on manager or a collection field that performs the same download and keeps the IDs available after a restart.
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After the content is available, identify the usable in-game map name and test it directly. A Workshop item’s title is not necessarily the identifier required by map. Add the verified identifier to the selected map group, or use the provider’s collection workflow when that workflow manages the rotation itself.
Make Workshop restarts predictable
- Use the documented Workshop startup command or panel field rather than relying on a one-time console download.
- Wait for the server to finish downloading and mounting the content before selecting the map.
- Test a cold restart, not only a live console change.
- Keep the collection or add-on configuration synchronized with the map-group list so an item is not requested by one system and omitted by the other.
Choose the management method that fits your server
| Approach | How it works | Advantages | Trade-offs |
|---|---|---|---|
| Self-managed map group | Edit gamemodes_server.txt, select the group with mapgroup, and set startup arguments yourself. |
Full control over names, order, mode settings, backups, and automation. | You must maintain syntax, install content, inspect logs, and repeat changes after a reinstall or update. |
| Hosting-panel workflow | Choose “Map Group,” initial map, and often Workshop collection fields in a web interface. | Fast setup, command previews, file access tools, and provider-managed restarts. | Labels and supported options vary; the panel may overwrite manual edits or hide the underlying file. |
Choose self-management when you need reproducible configuration under version control or unusual mode rules. Choose a panel workflow when several administrators need a safer interface and the provider documents how its controls map to the server files.
Fixed rotations, voting pools, and administrative changes
| Rotation style | Best for | Benefits | Risks |
|---|---|---|---|
| Fixed curated order | Training nights, tournaments, or a small private group. | Everyone knows what comes next; troubleshooting is straightforward; map downloads are limited. | A disliked map can affect the entire session unless an administrator intervenes. |
| Broad group with voting | Public or mixed-skill servers where players should influence the next map. | More variety and less dependence on one predetermined order. | Requires a correctly configured vote system; popular maps can crowd out the rest of the pool. |
| Administrative changes | Events, moderation, or testing. | An operator can skip a broken or unsuitable map immediately. | Manual changes can make the observed order differ from the configured group and complicate troubleshooting. |
Start with a fixed, small group while validating installation and mode settings. Expand the pool only after every map loads and at least one automatic transition succeeds. If you later add voting, document that voting can override the nominal order so administrators do not mistake an intentional choice for a broken cycle.
Diagnose the common failures
| Symptom | Likely cause | Fix |
|---|---|---|
An old tutorial tells you to create cfg/mapgroup_name.cfg. |
The instructions target CS:GO or an older server layout. | Check the current build and define the group in the existing game/csgo/gamemodes_server.txt structure. |
| A map loads manually but never appears next. | The group was not selected, or a panel reset it. | Run mapgroup <groupname>, verify the console output, and make the panel’s Map Group setting persistent. |
| The console reports “map not found,” or the server skips an entry. | The map is absent, the identifier is misspelled, or the content is mounted only on a client. | Install the map on the dedicated server, compare the exact identifier, and prove it with a direct map command. |
| A Workshop map worked once but disappears after restart. | The server never redownloads or mounts the Workshop item at startup. | Configure host_workshop_map, host_workshop_collection, or the provider’s add-on workflow and test a cold restart. |
| The map loads with the wrong rules. | game_type, game_mode, or a later mode configuration overrides the intended values. |
Inspect the effective settings, correct the appropriate configuration layer, and reload the map. |
| The server fails to start after editing the file. | Broken KeyValues syntax, wrong path, duplicate keys, or an accidental filename extension. | Restore the backup, compare braces and nesting with the shipped file, then reapply one small change at a time. |
Maintain the cycle through updates
CS2 updates can change file conventions, available maps, Workshop behavior, and hosting-panel controls. Keep a simple change log containing the group name, map identifiers, mode values, Workshop IDs, and the date each item was tested.
- Back up
gamemodes_server.txtbefore every edit. - After a game update, start with a private test and verify the active group.
- Direct-load each newly added or updated map.
- Test one natural transition with production-like limits.
- Check a full restart, especially when Workshop content is involved.
- Remove retired maps from both the group and any Workshop collection or add-on list.
Worked setup example
Assume you want four installed maps in a group named mg_weeknight, with de_ancient as the first map. The complete process is:
- Back up
game/csgo/gamemodes_server.txt. - Copy an existing map-group block in that file and rename the copy
mg_weeknight. - Replace its map entries with
de_ancient,de_anubis,de_inferno, andde_nuke, retaining the file’s original KeyValues nesting. - Save the file and restart if the build requires a restart to read server definitions.
- In the console, run
mapgroup mg_weeknight. - Run
map de_ancientto establish the first map. - Direct-load each remaining map and correct any installation or spelling issue.
- Check the selected game mode and round/time limits.
- Allow one map to end naturally and confirm that the next map comes from the group.
- Record the working configuration and restore normal production limits if you used shortened test values.
If this sequence works after a cold restart, the server has all three required pieces: an installed map set, a selected group, and an initial map with valid rotation rules. When it does not, use the symptom table rather than changing several settings at once; isolating the map, group, and mode layers makes the fault identifiable.
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