From the publisher, The Game Master:
Block It ! is an exciting game to play with family or friends. You pick it up in two seconds and the rules are so simple you’ll be able to play it after having watched it for a mere three minutes. But be careful - though the game seems far from complicated, it is not easy to win. The slightest lack of concentration is punished immediately; your opponent may block your progress and oblige you to look for another place for your block. The player who succeeds in placing all his blocks wins!
Block It ! has endless variation possibilities and remains a stimulating game. An ideal game for all ages, at home or abroad. Family and friends won’t resist the challenge so ask them and try to beat them at it!