What Topics Can You Play in LearnClash?

LearnClash offers general knowledge plus hundreds of built-in topics, ranging from history to space, and you can create your own topic if the one you want is missing. Topics apply to both duels and the daily quiz, so the same subject matter carries across every mode. The one caveat: "hundreds of topics" and "dozens of topics" are the only counts the site gives — there's no published full list to browse before you sign up.

The two starting points

When you set up a round, you pick a topic first. LearnClash describes two entry levels:

• General knowledge — a mixed-topic default if you don't want to commit to a subject.
• Hundreds of topics — specific subjects, with history and space named as examples.

The site also refers to "trivia questions across dozens of topics," which suggests the browsable catalog you'll actually see may be narrower than the total number of topics available. Treat "hundreds" as the upper bound and "dozens" as the more conservative figure.

Creating a topic that doesn't exist

If you can't find your subject, LearnClash lets you create it. The site states this directly: "Can't find yours? Create it." That means the topic list isn't fixed — a niche subject (a specific exam syllabus, a local history, a fandom) can become a playable topic rather than a reason to leave.

The source doesn't specify how topic creation works — whether you supply your own questions, whether the AI tutor generates them, or whether a created topic is private or shared. If that distinction matters to you, it's worth testing before relying on it.

Where topics apply

Topics aren't limited to one mode:

Because missed questions come back on a schedule, your topic choice has a longer tail than a single round — a topic you pick today can keep resurfacing for months.

What a round actually looks like

Topic selection feeds into a fixed round structure, which is useful for judging whether a subject is deep enough to hold up:

• 18 questions across 6 rounds
• 45 seconds per question
• 6 questions in about 3 minutes per turn
• Turn-based, asynchronous, with a 72-hour window for your opponent to play their turn

So a single topic needs enough questions to fill 18 slots per duel, repeatedly, without obvious repeats — unless the repeats are the spaced-repetition ones the app intends.

Practical takeaways

• Start with general knowledge if you're unsure which subject you'd enjoy dueling on.
• Search for your specific topic before creating one — with hundreds available, the odds are decent it already exists.
• Create a topic when you want something the catalog doesn't cover; this is the documented escape hatch.
• Expect the daily quiz and duels to draw from the same topic pool, since the site describes topics as applying across both.

The site doesn't publish a topic directory, pricing for topic creation, or whether created topics are public. If you need to confirm a specific subject exists, the fastest check is to start a round and look at the topic picker.