
- BGG rank
- BGG #2,512
- BGG rating
- 7.5
Sub Terra II: Inferno's Edge
- 1–6 players
- 45–75 min
- Complexity 2.2/5
- 2023

Rules assistance for Sub Terra: Investigation
Plain-language explanations of turns, card effects and disputed situations, with official source references and saved question history.

What would you like to know?
Answers come from the official rulebook, with the page to check.
Sub Terra: Investigation is an expansion for Sub Terra released in 2017 for 1–6 players, 45–90 minutes per game, and ages 10 and up. It was designed by Tim Pinder and its main mechanics are Variable Player Powers, Push Your Luck, and Tile Placement.
Description from the publisher: Not all of you made it out alive. With the help of a mysterious corporation, return to the cave and search for your fallen friends. Investigation adds 15 new item cards that grant your cavers powerful abilities. Recover them from the cave floor, or choose the ruthless Agent who starts fully equipped. The darkness hides many things. Be prepared.
Sub Terra: Investigation 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.
The listed playing time for Sub Terra: Investigation is 45–90 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 Sub Terra: Investigation for ages 10 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.
Sub Terra: Investigation has a complexity rating of 1.8 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.
Sub Terra: Investigation belongs to these categories: Horror, Exploration, and Maze. Its main mechanics are Variable Player Powers, Push Your Luck, and Tile Placement. 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 Sub Terra: Investigation are: Tim Pinder. 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 Sub Terra: Investigation as an expansion for Sub Terra. Expansions add new content, rules or scenarios to the base game and usually cannot be played on their own, so you need Sub Terra to use it. Check that your edition of Sub Terra is compatible, as some expansions were revised between editions.