Engage in the House of Cards HTML5 game, where you'll aim to construct a sturdy house of cards. Ensure that the foundations and lower layers are strong enough to support the higher ones. Build walls using pairs of cards with the same value or suit. Roofs, on the other hand, can be formed with any card. Be mindful of the special capabilities of walls with a value of 20 and 21, as they can add unique elements to your card structure. Test your skills and creativity as you strive to create the most stable and impressive House of Cards!