Tứ Sắc - Tu Sac is a free offline card game for Android developed by 52PLAY GAME. The game is based on the traditional Vietnamese card game Tứ Sắc Miền Nam and can be played with the computer or up to four players. The game offers a variety of betting options ranging from 1k to 5 million coins per game.

The game features an easy-to-use interface with helpful hints for players to know what cards their opponents hold and when to play their own cards. In addition, the game offers a pause function to allow players to take a break and come back to their game later without losing their progress.

Tứ Sắc - Tu Sac also includes other popular Vietnamese card games such as Tiến Lên, Sâm Lốc, Phỏm, and Cát Tê. Overall, Tứ Sắc - Tu Sac is a great option for those looking to play traditional Vietnamese card games offline on their Android device.