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What if learning a new equation gave you a new way to fight? Magicomancy is an online PVP/PVE game where you weaponize the power of math. Create spells with mathematical functions. Write Cartesian or polar equations, preview their trajectories, and cast them across a dynamic arena filled with destructible, time-shifting barriers.
I built Magicometry around a question I kept returning to: what would a math game look like if mathematics were the core mechanic, rather than a quiz players had to complete?
In Magicometry, equations are spells. Players write functions, preview the resulting paths, and cast them during a real-time wizard duel. The hope is that experimentation naturally builds intuition: when you change a coefficient or add a trigonometric function, you immediately see—and feel—the result.
OpenAI Codex powered by GPT‑5.6 was my primary development collaborator. I used it to turn the initial concept into a product specification, reason through the expression language and simulation rules, implement features directly in the repository, write tests, and identify gameplay exploits.
Some of the hardest decisions involved balancing mathematical freedom with safety and fairness. Magicometry uses a custom bounded expression parser rather than eval, a deterministic simulation, and protections against infinite values, discontinuities, stationary attacks, and computationally expensive expressions.
This is still an early version, and I’d especially love feedback on:
Does creating a spell feel approachable?
Are the mathematical effects easy to understand?
Which functions or spell-building tools should be added next?
Would you prefer solo challenges, online multiplayer, or more arena types first?
Thanks for checking it out—I’d love to see what spells you create.
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About Magicomancy on Product Hunt
“Turn math into spells and duel your friends”
Magicomancy was submitted on Product Hunt and earned 3 upvotes and 1 comments, placing #138 on the daily leaderboard. What if learning a new equation gave you a new way to fight? Magicomancy is an online PVP/PVE game where you weaponize the power of math. Create spells with mathematical functions. Write Cartesian or polar equations, preview their trajectories, and cast them across a dynamic arena filled with destructible, time-shifting barriers.
Magicomancy was featured in Free Games (8.9k followers), Education (78.9k followers), Games (98.7k followers) and OpenAI Day (9 followers) on Product Hunt. Together, these topics include over 65.3k products, making this a competitive space to launch in.
Who hunted Magicomancy?
Magicomancy was hunted by Brendan Beh. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how Magicomancy stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Brendan Beh