Two line-clearing wells, two different pieces, one set of controls, every move and rotation hits both boards at once.
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How to play
Two wells sit side by side, each fed its own falling piece. A single input moves, rotates and drops the active piece in both wells simultaneously, so a move that helps the left can wreck the right. Clear full rows in either well to score combined lines, and survive as long as you can, the run ends the moment either well tops out.
One input controls both wells at the same time.
Each well gets different pieces, so plan moves that work for both.
Complete horizontal rows clear in whichever well they form.
Game over when either the left or right well tops out; your score is combined lines.
Controls
Desktop: Arrow Left/Right to move, Up or X to rotate, Z to rotate back, Down to soft drop, Space to hard drop, all applied to both wells.
Phone & tablet: a keyboard is recommended, since the game runs on precise simultaneous keyboard control.
Tips & strategy
Keep both stacks flat, a tall column in one well limits the rotations you can safely make for the other.
Favor moves that are neutral for the harder board rather than ideal for the easier one.
Use the ghost outlines in both wells to spot a placement that clears or stays safe on each side.
About Twin Falling
Twin Falling is an original free browser puzzle that doubles the classic falling-block, line-clearing genre, asking you to keep two independent stacks alive with a single shared set of controls. Includes a seeded Daily and an endless Practice mode.
A free, original browser game on PlayPendium. No download, no install.