Play Linebacker unblocked, a highly requested game here on our site. How to Play: Control the Linebacker with the I (forward), J (left), K (backward), and L (right) keys. Use the "Space bar" to dive tackle. The objective is to tackle the running back before he gets to the end zone. Avoid blockers or go through them with special moves (unlockables). Special moves must be earned and are controlled with the A, S and D keys. Each special move can only be used once per defensive stand. Run over a speed burst and gather bonus points. Linebacker unblocked is rated E for everyone.