Solitaire Classic 2021 is a free Android game developed by Lens Studio. It is a classic card game that requires players to remove jokers from the deck and keep 1-13 cards of four suits. These cards are divided into four piles: the stockpile, the draw pile, the foundation piles, and the tableau piles.

To play, simply tap the stockpile to draw one card and add it to the draw pile. If a card on the tableau pile is face-up and has a different color and a number that is one less than the top card of another tableau pile, it can be moved to the top of that pile. The face-up cards on the tableau piles should alternate between red and black and decrease in number from the front.

The game features a beautiful and clear interface, efficient and speedy card placement, and smart hints that show possible actions. There are no limits to undoing moves, and an auto-complete option is available to complete the game. With random games to challenge players, Solitaire Classic 2021 is a fun and challenging card game that's worth a try.