Thanks for playing.
The game isn't a UNO game but if you know UNO it does help. Let me tell you that there are 9+ rules in total of 5 levels.
Rules can be odd/even, Prime, +1 Card ,+2 card ,+4 Card and Same color/Number and many others. Ina level when there are more than 3+ rules it is super difficult to survive as your chances of getting played are higher.