Idle income — coins without clicking

Idle games — where coins pile up even when you do nothing — run on one simple idea: a server loop that pays everyone on a timer. It's the same clicker loop, minus the click.

#The passive loop

local Players = game:GetService("Players")

task.spawn(function()
    while true do
        task.wait(1)

        for _, player in ipairs(Players:GetPlayers()) do
            local coins = player.leaderstats.Coins
            if coins then
                coins.Value = coins.Value + 1
                clickEvent:FireClient(player, coins.Value)
            end
        end
    end
end)

• Players:GetPlayers() — a table of everyone in the server.
• task.spawn keeps the loop running alongside the rest of the script.
• The if coins then guard skips players whose stats aren't set up yet.
• Every payout reuses the same FireClient the clicks use — the label updates however coins arrive.

#The guard matters

A player joins and PlayerAdded runs — but until their leaderstats folder is created, they have no Coins. The loop races that setup:

if coins then
    coins.Value = coins.Value + 1
end

Without the guard, nil.Value errors and the whole loop dies on the first player without stats. The guard is what makes the loop safe to run from the moment the game starts.

#One FireClient for everything

Clicks, idle ticks, purchases — they all change coins, and they all push the update the same way:

clickEvent:FireClient(player, coins.Value)

The client's OnClientEvent doesn't care why the total changed. It just reflects the new number. That's the design payoff: one receive handler, many sources of income.

-- inside the for loop, after coins.Value + 1

#Common mistakes

• Running the loop without task.spawn. A plain while loop at the top of the script blocks everything after it. Wrap it.
• Skipping the guard. The loop starts before players have stats — if coins then prevents the crash.
• Forgetting the wait. while true with no task.wait is a freeze and a coins fountain at once.
• Starting multiple loops. If the script restarts, task.spawn a fresh loop — never stack them in a reconnect handler.

Next: spending those coins — the upgrades shop.