MapsWeLove = {"map1","map2","map3"} -- Put any maps but atleast 2, else it's pointless to do random.
HoursToWait = math.Rand(1.9,2.1) -- Hours to wait to switch
 
timer.Simple(60*60*HourWait, function ()
	local tbl = table.Copy(MapsWeLove)
	local curMap = game.GetMap()
	for k, v in pairs(tbl) do
		if v == curMap then
			table.remove(tbl, k)
			break
		end
	end
	local maptochangeto = tbl[math.random(1,#tbl)]
	Msg("Server performing random map change to "..maptochangeto.."!\n")
	game.ConsoleCommand("changelevel "..maptochangeto.."\n")
end)