·4 min read

Board Game Weight, Explained

How BoardGameGeek complexity ratings work, where the numbers come from, and how much to trust them.

Weight is BoardGameGeek's word for how hard a game is to learn and play. Every game page has a complexity score from 1 to 5, averaged from user votes. Codenames sits around 1.3. Catan lands near 2.3. Terraforming Mars is about 3.3, and Gloomhaven pushes close to 3.9.

The scale measures effort, not quality. Codenames is a brilliant game at 1.3, and there are plenty of forgettable games rated 4. What the number tells you is how much rules explanation stands between sitting down and actually playing, and roughly how much your brain will sweat once you start.

The number itself is nothing more than an average of whatever anyone typed into a 1-to-5 slider on that game's BGG page. No committee, no design credentials required, no minimum number of plays before you're allowed to vote. That matters because the score is really "table experience as remembered by whoever bothered to rate it," which correlates with actual difficulty but isn't the same thing. A rating built on fifty votes from a game's most devoted fans reads differently than one built on five thousand votes from casual buyers who bounced off it after one play. BGG shows the vote count right next to the weight on every game page, and it's worth a glance before you trust the number too far — a 3.8 from twelve people is a rumor, not a rating.

Weight and length are not the same axis, and mixing them up is a common way to recommend someone the wrong game. Uno is low weight and short. Diplomacy is high weight and can run all night. Ticket to Ride takes maybe five minutes to teach and is genuinely light, even though a game of it can stretch to an hour. Twilight Imperium is both heavy and long, which is why it eats an entire Saturday. "Long" and "hard" are different complaints, and weight only answers the second one.

A few things worth knowing before you lean on these numbers too hard. The votes come from whoever felt like voting, which skews toward people who log everything on BGG. Older games often rate heavier than they'd feel today, partly because rulebooks used to be worse and modern editions clean up the teach. And weight blends two different things: rules overhead and decision depth. Chess would rate low on rules and high on depth. Most modern euros rate high on both or neither, which is part of why the middle of the scale is so crowded.

Board Game Menu asks BoardGameGeek for a weight the first time it needs one for a game, then caches that number for a year, since a title's community weight barely moves month to month once enough people have voted on it. Brand-new or obscure games sometimes don't have a weight yet at all. Rather than leave a hole in a course, the site treats an unrated game as a 2.5, which is squarely medium under its own thresholds, so it still gets considered instead of disappearing from every menu without a trace. If something you own never shows up anywhere, weight usually isn't the reason. Player count is the more common culprit, which the article on player counts covers.

Board Game Menu cuts the scale into three bands. Under 2.0 counts as light, 2.0 through 3.5 is medium, and above 3.5 is heavy. (A game rated exactly 2.0 counts as medium, not light: the site rounds toward the middle band at both seams.) Those aren't official BGG categories, just sensible lines that put party games and gateway fillers in the first band, most modern strategy games in the middle, and the true table hogs at the top.

Those particular cut points aren't arbitrary, even without an official BGG ruling on where they belong. A 2.0 ceiling keeps the light band for games you can teach in the time it takes to deal them: Sushi Go, Love Letter, most of the gateway shelf. A 3.5 floor keeps the heavy band for games that genuinely earn the warning label: the Gloomhavens, the Twilight Imperiums, the games where someone at the table has to be the designated rules-explainer. Everything with real decisions but no rules lawyer required lands in medium, which is most published games, and it's also why the medium course usually has the deepest bench to draw from when the site builds a menu.

One thing the menu does before it ever looks at weight: it filters by player count. A 3.9 monster that seats four will never show up when you ask for five players, no matter how good it is. Weight only sorts the games your group can actually play.

None of this makes the number gospel. If a "light" game keeps landing in the wrong course for your table, or a "heavy" one plays faster than its rating suggests, trust your table over the average. Rerolling that one course costs a click, and BGG's crowd doesn't know your group as well as you do. Two games can also share the exact same weight and still feel nothing alike, which is a different problem than a wrong rating and gets its own article, on Euro versus Ameritrash design.