Stackra

Stackra is a falling-blocks puzzle built for one thumb. No buttons crowding the board — just clean gestures and a neon-dark playfield that stays out of your way.

Pieces fall, you slide them into place, and every completed row vanishes in a flash of light. Clear four rows at once for a QUAD: a much bigger score, a shockwave across the board and a burst of particles. The further you get, the harder gravity pulls.

CLASSIC RULES, DONE PROPERLY
🎯 A 10x20 board and the seven familiar four-cell shapes
🎲 7-bag randomizer — pieces arrive in shuffled sets of all seven, so nothing droughts or floods
🔄 Full SRS rotation with wall kicks, so turning against a wall or a stack simply works
🧊 Hold a piece for later, plus a ghost outline showing exactly where the current one will land
⏱️ Lock delay — a piece that just touched down can still be nudged for a moment before it sets
📈 Every 10 lines raises the level and speeds up the fall

ONE-THUMB GESTURE CONTROLS
👉 Drag left or right to move the piece cell by cell, with smooth auto-repeat when you hold a direction
🔁 Tap anywhere on the board to rotate
👇 Press and hold to soft-drop — and keep sliding sideways while it falls
⚡ Flick downward for an instant hard drop, with a thump you can feel

EARN COINS, CHANGE THE LOOK
Each run pays out coins based on the lines you cleared, the level you reached and your final score, with an extra bonus for every QUAD. Spend them in the shop on 6 block skins and 5 playfield backgrounds — all drawn procedurally inside the app, with one of each unlocked from the start. Anything you buy stays yours and is saved between sessions, along with your coin balance and best score.

MADE TO RESPECT YOUR TIME
📴 Works fully offline — no account, no connection needed
🚫 No ads and no in-app purchases
💾 Minimise the app and the game pauses and saves itself, so you return to the same board
🎛️ Settings for music, sound effects, vibration, the ghost piece and separate volume sliders
📖 A short How to Play card set whenever you want a refresher

Under the hood the rules are the strict, classic ones — the scoring table, the bag, the kick tables and the lock delay all behave the way experienced players expect, while the gesture layer keeps everything reachable with a single thumb on the bus.

Whether you are chasing a personal best or just dropping a few pieces while you wait, Stackra keeps the rules honest, the controls instant and the screen quiet.