In BluffJudge, the choice of topic sets the stage for the entire psychological battle. A great topic provides enough concrete details for the Knower to feel confident, while offering enough ambiguity for the Bluffer to weave a convincing web of lies. To help you master the game and inspire your custom libraries, we've curated 18 classic examples from our default library, categorized by difficulty.
These examples demonstrate how to balance vague hints with specific truths to create high-stakes gameplay. Whether you're learning how to provide "just enough" detail as a Knower or practicing the art of "mirroring" as a Bluffer, these rounds offer valuable insights into the game's core mechanics.
Easy topics involve everyday objects, famous landmarks, or universally recognized concepts. The Knower can easily describe their features, and the Bluffer can often rely on common knowledge or the provided hints to stay in the game. These are perfect for beginners to learn the flow of the game.
Everyone knows what pizza is, but describing it without saying the word "pizza" or "pepperoni" is surprisingly tricky. The Knower might focus on the "circular shape" or the "social aspect of sharing slices." The Bluffer, seeing "delivery" and "cheese," can easily blend in by talking about "late-night cravings" or "melted toppings." The challenge for the Judge is to spot who is being too generic versus who has a specific "flavor" in mind.
This is a classic visual landmark. The Knower can describe the "lattice structure" or the "view from the top." The Bluffer has strong hints like "Paris" and "iron," making it easy to construct a story about a "romantic vacation" or a "massive metal structure." The Judge should look for specific details about the tower's history or its unique shape that a Bluffer might miss if they only focus on the "tourist" aspect.
The "green" color and the "torch" are dead giveaways if mentioned directly. The Knower must be subtle, perhaps mentioning the "oxidized surface" or the "welcoming gesture." The Bluffer can use "freedom" and "island" to talk about the "symbolic meaning" or the "boat ride to get there." It's a great test of how players handle iconic imagery without being too obvious.
Sports rounds are high-energy. The Knower might talk about the "90-minute duration" or the "ban on using hands." The Bluffer, with hints like "kick" and "goal," can easily fake enthusiasm for the "stadium atmosphere." The Judge can catch the Bluffer by asking about specific rules or the number of players, which might not be in the Bluffer's immediate "common sense" if they aren't sports fans.
Sensory details are key here. The Knower can describe the "bitter aroma" or the "energizing effect." The Bluffer can use "morning" and "cup" to talk about their "daily routine." The Judge should listen for the distinction between "instant" versus "brewed" or "beans" versus "grounds" to see who truly understands the "roast" process mentioned in the truth.
This topic is all about "motion" and "mechanics." The Knower can talk about "takeoff" or "cabin pressure." The Bluffer has "wings" and "sky," which are very safe bets. The Judge can probe with questions about "security checks" or "luggage limits" to see if the players can connect the physical object to the experience of using it.
Medium topics require more specific knowledge or a bit of creative interpretation. The Knower must be careful not to give away the "hook" of the topic, while the Bluffer needs to be more observant of the Knower's tone and vocabulary. These rounds often lead to the most intense debates.
This is a historical event with a lot of "conspiracy" potential. The Knower can focus on the "low gravity" or the "famous first words." The Bluffer, seeing "flag" and "crater," might talk about the "visuals of the surface." The Judge can ask about the "year" or the "number of people involved" to test the Knower's precision versus the Bluffer's vague "space" talk.
The "vinegared rice" is the technical truth that many people overlook, focusing only on the "raw fish." A smart Knower will mention the "preparation of the grain," while a Bluffer will likely stick to "raw fish" and "seaweed." This creates a perfect trap where the Bluffer sounds "too obvious" while the Knower sounds "technically correct but suspicious."
The distinction between "lava" (above ground) and "magma" (below ground) is a great way for the Knower to signal their status. The Bluffer will likely use "eruption" and "mountain" to describe a generic disaster movie scene. The Knower can talk about "tectonic plates" or "ash clouds" to sound more authoritative. It's a battle of "scientific detail" versus "cinematic drama."
This is a "sensory" topic that is hard to describe without being obvious. The Knower might talk about the "chemical salts used for different hues" or the "timed fuses." The Bluffer will focus on the "loud noise" and "celebration." The Judge can catch the Bluffer by asking about the "safety precautions" or the "history of the invention," which requires more than just knowing they are "pretty explosions."
The "geometry" is the key. The Knower can describe the "alignment with the stars" or the "internal chambers." The Bluffer has "Egypt" and "tomb," which are very strong leads. The challenge for the Knower is to describe the "engineering feat" without saying "Giza" or "Pharaoh." The Bluffer can easily mirror the Knower's "ancient" talk, making it a very close race.
The "oval shape" and the "limestone material" are specific details the Knower can use. The Bluffer will likely talk about "gladiators" and "fighting." The Knower can pivot to the "architectural ruins" or the "seating capacity" to sound more like someone reading a history book. The Judge should look for the person who knows it's an "amphitheatre" rather than just a "stadium."
Hard topics are abstract, complex, or involve vast systems. The Knower may struggle to find a single "defining" feature, and the Bluffer can often hide in the complexity of the subject. These rounds require deep deduction and a keen eye for logical inconsistencies.
How do you describe the internet without saying "website" or "Google"? The Knower has to talk about "protocols," "undersea cables," or "packet switching." The Bluffer, with hints like "online" and "data," can talk about "social media" or "streaming." The Judge will be confused because the "experience" of the internet (Bluffer's talk) is so different from the "infrastructure" of the internet (Knower's talk). It's a brilliant test of perspective.
The "mystery" is the biggest hint and the biggest trap. The Knower can talk about the "solstice alignment" or the "source of the bluestones." The Bluffer will lean heavily into the "mystery" and "aliens" or "druids." The Knower needs to be grounded in the "physical arrangement" of the stones to prove they know the truth. The Judge has to decide if the "mystery" talk is genuine curiosity or a Bluffer's shield.
This is a "visual" topic that is very abstract. The Knower can talk about "solar winds" and "magnetic fields." The Bluffer will talk about "dancing lights" and "cold weather." The Knower's "scientific" approach versus the Bluffer's "poetic" approach creates a fascinating dynamic. The Judge can ask about "when" they appear to see if the players know about "solar cycles" versus just "at night."
The "scale" is the defining feature. The Knower can talk about it being "visible from space" or the "bleaching crisis." The Bluffer will talk about "colorful fish" and "snorkeling." The Knower's focus on the "ecosystem" versus the Bluffer's focus on the "tourist activity" is the key differentiator. The Judge should look for the person who understands it's a "living structure" rather than just a "place to swim."
The "buoyancy" is the most famous part, but the "lowest point on Earth" is the technical truth. The Knower can talk about the "lack of life" (hence the name) or the "mineral-rich mud." The Bluffer will focus on "floating" and "salt." The Knower can win by mentioning the "geopolitical borders" or the "receding water levels," which are less common knowledge than the "floating" part.
This is a "vast system" topic. The Knower can talk about the "oxygen production" or the "canopy layers." The Bluffer will talk about "monkeys" and "rain." The Knower's focus on the "biome" and "basin" versus the Bluffer's "generic jungle" talk is the main point of contention. The Judge can probe with questions about the "river's length" or the "indigenous tribes" to see who has the deeper connection to the truth.
These 18 examples showcase the diversity of topics available in BluffJudge. From the simple joy of describing a Pizza to the complex infrastructure of the Internet, every round is a new opportunity for deception and discovery. We hope these examples inspire you to create your own custom libraries and push the boundaries of what a "good topic" can be. Remember, the best rounds are those where the truth is just out of reach, and the lies are just close enough to be believed.
Last Updated: May 2026