[Rob_Maate]

Set a recurring timer.

https://sampwiki.blast.hk/wiki/SetTimerEx

Inside your function, have a list of random messages.

Here's an example script (untested):

pawn Code:

new RandomMessages[5][128];
new MsgIDX;

forward DisplayRandomMessage();

public OnGameModeInit()
{
    SetTimer("DisplayRandomMessage", 60000, 1);
    RandomMessages[0] = "Add to favorites!";
    RandomMessages[1] = "sdf";
    RandomMessages[2] = "sd";
    RandomMessages[3] = "fdsf";
    RandomMessages[4] = "sdfdsf";
    MsgIDX = 0;
    return 1;
}

public DisplayRandomMessage()
{
    SendClientMessageToAll(0xFFFF00FF, RandomMessages[MsgIDX]);
    MsgIDX++;
    if(MsgIDX >= 5) MsgIDX = 0;
    return 1;
}