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A minimalist yet strategic puzzle-arcade game where every bounce counts. Redistribute cell values, unlock powerful abilities, and survive as long as you can — one wrong move, and it's game over.
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
I/O is a minimalist but deeply strategic puzzle-arcade game where every bounce matters — and one wrong move could end your run.
At its core, I/O is about survival. You bounce between two platforms filled with numbered cells. Each bounce reduces a cell’s value — and if you ever land on a cell showing zero, it’s game over. Unless… you’ve got a power to save you.
🧠 Plan Your Moves. Adapt Fast.
Each run presents a fresh grid and unique challenge. Think ahead, redistribute cell values, and use your limited powers wisely. Every 5 stages, you’ll enter Split Mode — a tactical break where you can transfer half the value of one cell into another, giving you a chance to balance the board and extend your life.
🧬 Choose Your Powers
Before each run, pick two powers to bring with you. These are game-changers:
Safe Bounce: Survive a 0 hit once.
Value Boost: Double the value of a cell.
Overcharge: Double your score for one bounce.
Zero Cleanse: Turn a 0 into something usable.
And more...
Each power has limited uses, so timing is everything.
📈 Progress & Unlock
Earn score by surviving longer and bouncing smart. Use that score to unlock new power-ups in the Power Store, giving you more tools and strategies for future runs.
🧩 Key Features
Endless, score-based gameplay focused on strategy and adaptation
Power-up system with 8+ unique abilities
Split Mode for mid-run cell value redistribution
Clean, responsive visual design
Strategic layer that rewards planning and risk management
Steam support and progression tracking
Highly replayable with new combinations and runs each time
How long can you stay in the loop?
Lowest tracked price: CA$3.89 (Jul 7, 2026) · current best: CA$3.89.
0% positive reviews all-time.
Right now the cheapest offer for I/O is CA$3.89 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 I/O is CA$3.89 (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 I/O 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.
