On a standard 10×20 well, one of seven tetrominoes spawns at the top center. Hold and drag to draw a guide path (ink cost). On release, the piece slides along that path to the end, rotating automatically with the path tangent. After the path ends, the piece falls until it locks on the floor or stack; full rows clear and restore ink. With no ink—or if you never draw—the piece auto-falls after a short wait. Score: cleared lines × 100 + remaining ink × 5 − total drawn path length × 0.1.
This is a casual game.