Tip: with the Sidecade extension you can keep playing Fill Line while you browse other sites.
Get the extension →Sharpen your mind with a connect-the-block-style one-line brain training puzzle game. A simple but addictive one-line puzzle game that’s completely free to play.
Touch and drag
Sidecade is a free Chrome extension that opens games in a floating window over whatever you're browsing. Press Alt+J and you're playing, without switching tabs.
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