4 Hình 1 Chữ - 4 hinh 1 chu is an amusing and challenging puzzle game for Android users. The game's objective is to guess the hidden phrase, proverb, or idiom by looking at the four pictures presented. The game contains a variety of Vietnamese proverbs and idioms that players can learn as they progress through the levels. The game's features include the ability to zoom in on any image, flip the picture to reveal the answer with a funny explanation, and go back and review previously solved puzzles.

In addition, players can choose from a variety of game modes, including guessing the proverb or idiom based on four pictures, guessing the phrase based on two pictures, and a fast-paced scratch-and-guess game. The game also offers more than 100 levels of two-picture puzzles and 1,194 levels of online play. Players can share their progress on social media platforms such as Facebook, Zalo, and Google+ and discuss tricky puzzles with other players.

Overall, 4 Hình 1 Chữ - 4 hinh 1 chu is an entertaining and challenging puzzle game that provides players with a relaxing and enjoyable experience while also improving their reasoning and problem-solving skills.