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Game details
Stack Defence
Jump in, compete, restart — classic .io gameplay.
Developer: Yandex Games
Play Stack Defence Online for Free
Stack Defence is built for short, replayable sessions against live opponents. Learn the arena, react fast, and see how high you can climb before you're taken out.
How to play
Join the arena, react fast, and try to outlast or outgrow the other players in the round.
Controls
Move with WASD or the mouse, click or tap to act — controls vary slightly by game mode.
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Frequently asked questions
Is Stack Defence free to play?+
Yes. You can open the Stack Defence game page on PlayKovo for free.
Do I need to download Stack Defence?+
No. Stack Defence opens in the browser, so the PlayKovo game page does not require an installer.
Which devices support Stack Defence?+
Stack Defence is listed with both desktop and mobile support. Check the controls section on this page for the inputs available on your device.
How do I play Stack Defence?+
Join the arena, react fast, and try to outlast or outgrow the other players in the round.
What are the controls for Stack Defence?+
Move with WASD or the mouse, click or tap to act — controls vary slightly by game mode.
Guide
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What free means at PlayKovo, how browser games earn money through advertising, and the signs that a free game is asking for more than it should.
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