To play Ubongo 3D, start by choosing a puzzle card. There are different difficulty levels, so pick one that suits your skill. Each card has a specific 3D space you need to fill. Then, take the 3D blocks and race to place them on the card to fill the space perfectly. Every time you succeed, you get colorful plastic gems. Keep playing rounds until the end of the game, and the one with the most valuable gem collection wins. You can play with up to three other players or play alone. When handling the game, be gentle with the 3D pieces and puzzle boards to keep them in good condition. Store the game in a dry place to prevent any damage. If the pieces get dirty, you can gently wipe them with a soft cloth.