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Knuckles Treasure Hunt is an LCD game created for distribution at McDonald's restaurants. It was offered as a part of Happy Meals for a limited time in 2004.
The objective of the game was to move Knuckles around with the two buttons to collect Chaos Emeralds. The level has six platforms that feature randomly appearing Chaos Emeralds. There are two moving platforms that take the player to higher or lower levels. After Knuckles accumulates a certain number of Chaos Emeralds, the game ends.