Free, runs entirely in your browser — no sign-up, no file upload to a server.
What is Connect Four?
The classic disc-dropping, connect-four-in-a-row game.
Do I need an account or internet connection to play?
No — it runs entirely in your browser with no sign-up and no server round-trip once the page has loaded.
Is my progress or high score saved?
Yes — it's saved to your browser's local storage, so it's there when you come back, but it stays on this device/browser only (it won't sync to another device, and clearing your browser data will clear it too).
Does it work on mobile?
Yes — it's fully playable on touch devices, with controls adapted for a smaller screen.
How do I report a problem or request a feature for this tool?
Use the Contact / Feedback page — select "Connect Four" as the related tool so we know exactly which tool you mean, then describe the bug or the feature you'd like to see.