I started off using strategies like placing down my +2s and +4s right away when I get them to minimize my cards. I also thought that trying to changed the colour to something I didn’t want when I could, because I knew someone would change it to a different one as soon as they could, because they think I want that colour. There is a a 1/3 chance they change it to the colour I want so it works a lot of the time. I ended up developing better strategies like holding my cards together so that the rest of the players would say UNO, be wrong, and then would have to pick up a card. I started keeping my +2s and especially my +4s because I realized I can place +4s on anything, doing this meant that I would never get stuck with one card because I could place it on anything. One pattern I noticed was that most of the time, when someone changed the colour to red it almost always got changed to green a couple players later. A brief explanation of the game would be: UNO, a game where you face off against other players to try and lose all your cards first. You tell UNO!, when you have 1 card left, and you can place +4s and colour changers on anything. The rest of the cards are colour/number coordinated.