
- BGG rank
- BGG #5,489
- BGG rating
- 8.4
ONUS!: Traianus
- 1–4 players
- 30–120 min
- Complexity 2.9/5
- 2023

2024
Rules assistance for ONUS! Under the Eagle
Plain-language explanations of turns, card effects and disputed situations, with official source references and saved question history.

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Answers come from the official rulebook, with the page to check.
ONUS! Under the Eagle is a board game expansion released in 2024 for 1–6 players. It was designed by Luis Álvaro Hernández.
Simon Scarrow's Eagle book series takes us back to the times when Claudius was emperor in Rome, beginning with the invasion of Britain, through the adventures of his characters Macro and Cato. With this expansion of ONUS! you will experience first hand, the battles of the books, commanding Roman troops or enemies of the Empire, from skirmishes of a few men to large armies, even playing alone! —description from the publisher
ONUS! Under the Eagle supports 1–6 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.
ONUS! Under the Eagle has a complexity rating of 3.0 out of 5 from BoardGameGeek players, which makes it a medium-weight 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.
ONUS! Under the Eagle belongs to these categories: Fighting, Wargame, and Ancient. Categories describe the theme, setting and style of a game rather than its rules. Filter the catalogue by the same category to find similar games when you enjoyed ONUS! Under the Eagle and want something comparable for your next game night.
The credited designers of ONUS! Under the Eagle are: Luis Álvaro Hernández. 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 ONUS! Under the Eagle as an expansion. Expansions add new content, rules or scenarios to an existing base game and usually cannot be played on their own. Check the box or publisher description for the exact base game required, and make sure your edition of that game is compatible with this expansion.