Decision approving the content of the online video game G1, number: 141/QD-PTTH&TTĐT, issued on March 25, 2026 License link: https://giayphep.abei.gov.vn/g1/132045 [Special Reward] 500 draws, Skeleton Outfit, Random Orange Hero, and Limited Decorations! When the familiar city suddenly turns into a hunting ground for Evil Spirits... "Knock, knock, knock," a mysterious knocking sound echoes... "Shhh, be quiet, don't open the door." All the legendary Evil Spirits are breaking through the dimensions, ready to smash down your door at any moment. All you need to do is lock the door and, along with your Heroes, unleash an extremely exciting and dramatic battle to protect [The Door]! From schools, hospitals, hotels to streets and offices – every everyday setting becomes a thrilling Tower Defense game. Enjoy double the visual and gameplay fun in just 5 minutes per match! [5 KEY FEATURES – REDEFINING THE DARK TALL DEFENSE GENRE] ※ Choose your room, lock the door, lie still, and level up! What to do when the Evil Spirit arrives? Can't escape? Then just lie down! Choose your [Room], lock the [Door], and simply lie down to level up in your dreams, while simultaneously summoning Heroes to build your defenses! Whether you can withstand the knocking in the middle of the night depends entirely on your strategy. ※ Reverse tactics, psychological warfare No need to "gamble your life," and no need to run away! Beds can be upgraded, doors can be upgraded, and so can your Heroes. Your room is your fortress. Combine the right formations and tactics to overcome any challenge. Each successful defense of the door brings an ultimate feeling of satisfaction. ※ Unique Visual Experience The Gothic Chibi art style creates a subtly dark and captivating atmosphere. Is the vampire's glass filled with wine or some other "secret liquid"? Why does the chainsaw-wielding assassin wear an adorable rabbit mask? With hundreds of unique Hero and Evil Spirit designs, you'll find them both terrifying and cute. ※ Diverse Transformations, Challenging Every Map Become a member of the [Brave Guild] to explore mysterious locations, from trains filled with Evil Spirits, dormitories echoing with nighttime singing, to mysterious underground caves. Players can freely transform into various characters. Today, which "face" will you choose to participate in this survival game? ※ Fast-paced and exciting battles Each round is only 5 minutes, completely stress-free! Enjoy a match in your free time. Even in a short amount of time, you can still easily experience a high-quality Tower Defense game.