The above are the basic rules, there are a few variations on the basic theme, and a few of these alternate rulesets are provided in-game.

"Uno Flip" modifies the decks to be double-sided, so each side can be relevant, including cards to make them flip over so you have to switch rules depending on deck face. "50th Century Edition" introduces the 50/50 card and the new "Gold Coin". And finally "Uno Party Mania" introduces the "Point Taken", "Wild Drawn Together", and "Wild Pile Up" cards to further mix things up.

There are modes to play against the computer or online against other players. Both work fine and the AI is reasonably competent without being too smart. The only real negative I can give this game is that it explains nothing about Uno to new players, and the game already assumes you know the rules I just explained.

Graphically, this is a pretty simple if colorful game. The cards and text are easy to read, and the themed decks and backgrounds add a lot of background decor. The Party backdrop is probably the most impressive and colorful of the lot, with its 3Dish backdrop of a table at an outdoor style party. Most of the themed decks also add their own graphical frills if that interests you. There are unlockable extra themes to liven up the cards, player area, and other parts of the interface that can be earned as you play as well. Oddly, while they do not have a Mario-themed deck or theme, they DO have a Rabbids themed deck and backdrop. You can get additional themes based on other Ubisoft titles if you are willing to shell out for the DLC as well.

The sounds and music aren't anything special but do set the relaxing mood, perfect for the fact this is a laid-back card game. The controls on the Switch are clearly marked and easy to learn, though they offer no tutorials, so you'll want to practice with the AI a bit to get the hang of things.

This is a stable game. If you can get your Switch to turn on, this will load fast and play smoothly. You will need to set up an Ubisoft account to play though, but this can be done quickly and if you have an existing Ubisoft account it will accept that with little trouble.

Morally, there is nothing to complain about. This is about playing a relaxing, non-gambling-centric card game fit for young children and older.

Overall, this is a decent purchase if you want to play Uno on the go or don't want to mess with a real-world Uno deck to play a game with friends. Morally, it's utterly stainless. While Ubisoft's flagship titles need some work these days, this little Uno title is solid and worth the purchase.