TetraStack - Falling Block Stacker

A classic block-stacking extension with multiple game modes. Stay focused and keep your stack from reaching the top!

TetraStack is a fast-paced, addictive falling block puzzle you can launch instantly from your browser toolbar. Built for smooth, no-tab gameplay, it ramps up in speed the longer you survive—perfect for quick breaks or intense high score runs. GAME MODES: - Standard Mode – Blocks fall faster the longer you survive - Endless Mode – Fixed-speed mode perfect for practice or relaxed play - Sand Mode – Blocks turn to sand after placement, adding chaos and strategy FEATURES: - Popup Launch – Instantly start the game from your browser toolbar—no tabs required - Auto-Save – Resume your progress between sessions automatically - Custom Controls – Fully customizable keybinds to suit your play style - Piece Preview – View the next three blocks to plan your moves strategically - Hold & Swap – Temporarily store a piece and bring it back into play at any time - Minimalist Design – Clean and distraction-free interface focused on gameplay - Offline Support – Play anytime, even without an internet connection Simple. Fast. Addictive. Try TetraStack now and see how long you can last.