Card games: between luck and decision
A good card game gives you one good decision every two or three minutes.
Card games have an unfair reputation. Many people treat them as games of luck, while the part that brings someone back is the small decision made with incomplete information. Understanding the ratio between those two things helps you pick a game that fits your mood today.
In most solo card games the cards you receive are indeed random, but the arrangement of those cards in your hand is not. Decisions about which card to discard, which to hold for the next round, and when to stop drawing are real decisions that change the outcome. A good game leaves room for those decisions rather than only for the draw.
The way to recognise a game that leaves room for decisions is to look for hidden information. If every card is face up and every option is visible, the game becomes a puzzle rather than a card game. If every card is face down and nothing can be inferred, the game becomes a lottery. A good card game sits between those two states: some information open, some of it inferable.
Another useful sign is whether a loss can be explained. After a round you lost, ask yourself whether you can name one decision that caused it. If you can, the game has given you something to improve. If you cannot, and the loss came only from bad cards, that game is spending your time without giving you a skill.
What to avoid is a card game that changes its rules midway without telling you. If round five suddenly uses a different deck, or if card values shift without explanation, the decisions you made in round one become meaningless. Such games often add short-term excitement while removing the reason to play again.
For short sessions, card games with rounds of five to eight minutes are the safest choice. That is long enough for one or two meaningful decisions, and short enough not to leave you mid-game when the break ends. For long sessions, card games with a campaign or several stages are more satisfying, because you can plan more than one round at a time.
The conclusion is simple: choose card games that let you make one good decision every two or three minutes, and that let you explain your own losses. If both conditions are met, the game is not a game of luck, and it will still hold your attention on the tenth play.