The Walls of Jericho - PC Click and drag blocks to move into the right place - match three or more of a kind in a row to crumble them Red blocks conceal Power Blocks -- use them to destroy ordinary blocks when matched up Activate the ARK to demolish the walls - Match up 3 ARK blocks and bring the whole thing crashing down Click and drag blocks to move into the right place - match three or more of a kind in a row to crumble them Red blocks conceal Power Blocks -- use them to destroy ordinary blocks when matched up Activate the ARK to demolish the walls - Match up 3 ARK blocks and bring the whole thing crashing down