Idle Broker is a free, independently made browser game in the idle / incremental genre. You run a financial firm from a single desk and grow it into an automated trading operation. It is playable in any modern browser, on desktop or phone, with no download and no account needed to start.
It was built as a small solo project, which is why it does the things it does rather than the things a bigger studio's idle game does: no lives, no energy, no timers nagging you to come back, and a single honest subscription instead of a store full of currencies. The design goal was one specific feeling — the shift from doing every trade by hand to watching a whole floor do it for you — and most decisions in the game bend toward making that shift land.
The game runs entirely in your browser. It is a Next.js and TypeScript application; the game state lives on your device in local storage, and the simulation — trades settling, offline earnings, achievements unlocking — happens client-side. There is no game server tracking your every click.
The only things that leave your device are the ones that have to: premium subscription status is verified through Stripe, optional cloud-save snapshots are stored so you can move between devices, and web-push subscriptions are kept if you opt into notifications. Each of those is described on the privacy page.
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Your progress is yours. It saves automatically to this browser. If you enable cloud sync in Settings, a snapshot is stored so another device can pick it up; disabling sync deletes that snapshot. Clearing your browser storage will reset a purely-local game, so cloud sync is the way to guard against that.
The article pages carry ads to fund the game; the game screen itself does not. It is also funded by gems, the optional premium currency that buys character buffs and time-saving boosts, and by a Premium subscription that doubles your earnings. Nothing in the game is gated behind either — they change your pace, not your ceiling.
It is an actively developed game and player feedback shapes it. If something feels off — a balance wall, a bug, an idea — the operator contact details are on the imprint page.