"A free card game in Spanish where you have to steal cards from the pack and your opponents."
The name of this addictive card game, Robamonton, maybe doesn't say much in English. Basically it is a game where you have to steal (Roba) cards from the deck (monton) in the middle until you get all the cards, from your opponents included.
In Robamonton so the player can steal the cards from the middle, they have to be of the same suit you have in your hand. If you don't have any, you have to throw one of your cards into the middle and an opponent can take it off you. So, at the same time as losing a card from your hand, your opponent also can gain one.
Robamonton is totally in Spanish.