Deadbolt

A grid is packed with rectangular pieces; horizontal ones slide left and right, vertical ones up and down. One piece is yours, and you win when it reaches the exit on the right edge. The twist is fuel: each piece has a limited number of single-cell moves it can ever make, so a few wasted slides can lock you out of the solution.

• Slide blocking pieces to open a lane
• Move your target piece toward the exit on the right
• Spend each piece's limited moves carefully
• Reach the exit to clear the level

• Desktop: click a piece to select it, then use the Arrow keys to slide it; or click to nudge
• Phone & tablet: tap a piece and tap to slide it, fully touch-driven

• Daily: the same puzzle for everyone each day
• Practice: a fresh layout every run
• Easy, Medium and Hard add bigger grids and tighter fuel

• Plan the full escape path before moving a single piece
• Don't burn a piece's fuel on a slide you'll need to undo
• Clear the pieces nearest the exit lane first to avoid trapping yourself

Deadbolt adds a fuel-budget twist to the sliding-block puzzle, rewarding planning ahead to free the key piece in fewer moves.

• Skills: spatial reasoning, planning, sliding-block puzzles, optimization
• Best for: roughly grades 4–12 (ages 9+)
• For parents & teachers: planning and spatial reasoning under a tight budget.

Deadbolt is an original, free browser game that adds a fuel-budget twist to the classic sliding-block puzzle. It is built in-house and plays in your browser.

A free, original browser game on PlayPendium. No download, no install.