Open Roblox Studio and load your game project.

Create two folders in ServerScriptService: Name one Modules for module scripts. Name the other Scripts for server scripts.

Add a folder in ReplicatedStorage called RemoteEvents to store remote events for server-client communication.

(Optional) Design a GUI for the round system: Add a ScreenGui in StarterGui and name it (e.g., StatusGui). Set IgnoreGuiInset to true to position the GUI at the top. Add a Frame (e.g., MainFrame) and another Frame inside it (e.g., Container) to hold TextLabels for the round status and timer.

Create a ModuleScript in the Modules folder and name it Round. This will handle the round logic: Define properties like IntermissionTime, GraceTime, RoundTime, and IsRound. Add methods for intermission, grace period, starting the round, and checking player count.

Add a Script in the Scripts folder and name it RoundServer: Require the Round module. Use Players.PlayerAdded to trigger the round system when players join.

Implement the round logic in the Round module: Create functions for intermission, grace period, and round countdown using loops. Use Players:GetPlayers() to check the number of players and ensure a minimum count before starting a round.

Add RemoteEvents in the RemoteEvents folder: Create one for the timer (e.g., TimerRemoteEvent). Create another for the round status (e.g., StatusRemoteEvent).

Update the Round module to send status and timer updates to the client: Use FireAllClients() with the remote events to communicate round status and timer values.

Create a LocalScript in StarterPlayerScripts and name it RoundClient: Connect to the remote events to receive updates. Update the GUI elements (e.g., Status and Timer TextLabels) based on the received data.

Test the round system: Ensure the intermission, grace period, and round logic work as expected. Verify that the GUI updates correctly and players are teleported during the round.

(Optional) Add features like random map selection, team sorting, or rewards for players at the end of each round.