
- BGG rank
- BGG #446
- BGG rating
- 7.2
Arboretum
- 2–4 players
- 30 min
- Complexity 2.1/5
- 2015

2008
Rules assistance for Onexeno
Plain-language explanations of turns, card effects and disputed situations, with official source references and saved question history.
For 1 player

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Answers come from the official rulebook, with the page to check.
Onexeno is a board game released in 2008 for 1–7 players, 20 minutes per game, and ages 7 and up. It was designed by Ray Lauzzana and its main mechanics are Open Drafting.
ONEXENO is pronounced as if you broke the word into ONE XENO: ONE as in the number 1; XENO as in the Greek philosopher Xeno who is responsible for Xeno's paradox. ONEXENO is a deck of cards comprising all the combinations of pips around the edge of a 3×3 grid, which means they range in "value" from 0-8. There are rules for several games listed at the publisher's website. Here are the summarized rules for the basic game, whose rules are included on cards in the box: The goal is to accumulate the greatest number of points at the end of the game. Players gain points by forming rows of five matching cards. At the end of game, the points in a player's hand are deducted from the points that they have collected. When playing partners, the partner's scores are tallied together to form a total score. The player or team with the highest score wins.
Onexeno supports 1–7 players according to the catalogue. This range comes from the publisher’s listed player count, so the game can be set up for any group size within it. Some setups, rules and scoring details may still vary by player count, so check your edition’s rulebook for the exact configuration.
The listed playing time for Onexeno is 20 minutes. This is the publisher’s estimate for a full game. The actual duration depends on the group, the player count and familiarity with the rules: first sessions usually run longer, while experienced groups often finish faster. Setup and teaching time are not included in this estimate.
The catalogue lists Onexeno for ages 7 and up. This is the publisher’s recommendation and reflects reading demands, rule complexity and small components rather than theme alone. Younger players can often join with help from an adult, so check the age guidance on your edition and consider your group’s experience with board games.
Onexeno has a complexity rating of 1.7 out of 5 from BoardGameGeek players, which makes it a light game. The rating reflects how much rules knowledge, planning and decision-making a typical game demands. Expect a longer first teach for heavier games, and use a preparation guide before game night.
Onexeno belongs to these categories: Card Game and Number. Its main mechanics are Open Drafting. Categories describe the theme and setting of a game, while mechanics describe what players actually do on their turns. Each mechanic links to a catalogue hub with similar games, which helps when you want something comparable.
The credited designers of Onexeno are: Ray Lauzzana. These credits come from the published game data and name the people responsible for the game’s design, not its illustrators or publishers. Designer pages on MeepleRules collect other titles by the same designers, which helps when you enjoy a game and want to find similar ones.
The catalogue lists Onexeno as a base game. It can be played on its own with the components in the box and does not require any other title. Expansions, if any exist, add new content or rules on top of it and are listed separately in the catalogue with a link back to this base game.