A lot of disappointing game purchases come from buying the wrong category for the group, not a bad game. A dense strategy game and a loud party game solve completely different problems, and the "best" game depends entirely on who's actually playing.
Party games: optimize for low buy-in
Party games should be explainable in under two minutes, playable by people who've never played a board game in their life, and fun even if half the table is only half paying attention. They tend to scale well from 5 to 10+ people and lean on humor, bluffing, or quick reactions rather than strategic depth. The tradeoff: most party games don't hold up to dozens of plays with the same small group — they're built for breadth, not depth.
Strategy games: optimize for depth
Strategy games ask for real attention — a rules explanation that takes longer than two minutes, players who want to think about their turn, and (usually) a smaller group, often 2-5. The payoff is a game that's still interesting after the 20th play, because the depth comes from player decisions rather than randomness or social dynamics.
The middle ground
"Gateway" and "family" games sit between the two: simple enough to teach in five minutes, but with enough decision-making to reward repeat plays. These are usually the safest gift or first purchase for a group whose taste you don't know yet — see our gateway games guide for specifics.
A practical rule
Match the game to the largest group size you'll actually have at the table regularly, not the size you'd ideally want. A brilliant 2-player game gets little use if game night is reliably six people; a party game gets old fast if it's really just you and a partner most weeks.