Rotate the falling blocks, fill whole rows and clear them before the stack reaches the top.
Block Drop is a falling-block puzzle. Seven shapes fall one at a time into a well ten squares wide and twenty high. Fill whole rows to clear them, and keep the stack from reaching the top.
The Next box shows the piece after this one. A faint outline shows where the current piece will land. Pieces come from a shuffled set of all seven, so every shape turns up once in every seven pieces. A rotation that hits a wall nudges the piece sideways to fit.
Leaving the tab pauses the game.
You start at level 1 and go up one level for every ten lines you clear. Each level makes pieces fall faster, until level 15 and beyond, where they fall at top speed.
Every finished game is offered to the all-time leaderboard, which ranks each player's highest score.