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ProBelt is a game in which you calculate results by using mathematical operators. Conveyor belts are used to transport numbers between operators.
Price history tracked since Jul 7, 2026 · vs all tracked offers.
Based solely on tracked price history — not purchase advice.
Tracked since Jul 7, 2026.
Steam Train Fest starts Jul 20, 2026
Official stores with direct support.
By placing mathematical operators on a grid and connecting them by conveyor belts you need to get to a specific result in order to solve tasks and level up.
Each task starts with a source producing numbers and a goal that expects a specific result. On the way from the source to the goal construct conveyor belts leading in and out of operators. At the end the number(s) delivered to the goal must match the requirements.
Operators are similar to what's part of a programming language, like if-else constructs, memory cells, for loops, modulo, square roots or stacks. There are also operators to display results, like a 7-Segment display.
The game uses real numbers.
Each level upgrade unlocks additional operators.
A level editor (unlocked when highest level reached) allows players to produce tasks. In the level editor a (proprietary) script language is used to calculate what number(s) the source produces and what number(s) the goal expects.
There is a sandbox mode in which players can freely build whatever they want using the operators available at the current level.
Each new operator gets explained in a tutorial or in a task.
Right now the cheapest offer for ProBelt is PLN 27.50 at Steam. KingsPrice compares 1 offers from 1 stores — official stores and keyshops — and refreshes prices throughout the day.
The lowest price KingsPrice has tracked for ProBelt is PLN 27.50 (recorded on Jul 7, 2026). This covers the stores and period we monitor — set a price alert to catch the next drop to that level.
Create a free price alert on this page and KingsPrice will email you when ProBelt drops below your chosen price. The biggest discounts usually appear during seasonal Steam sales and publisher promotions — the sale calendar on this page shows the next confirmed event.
