What is Pion's Theorem?
Ever wanted to feel like a genius for ten minutes a day? Pion's Theorem turns math into a deckbuilder where you combine operators and numbers to shatter target values and break the system.


Gameplay
You're basically using arithmetic to break a system. Instead of fighting monsters, you're building a deck of number and operator cards to hit specific target values. The loop is super addictive because you're constantly hunting for synergies between your numbers and operators to find the most efficient solve. It's a bit like Balatro in how you chase those broken combinations that make a nightmare target feel trivial. You've got four modes to rotate through—Puzzle, Daily Challenge, Competitive, and Strategy—so you can switch between a slow burn and a quick hit.
It's not without its rough edges, though. If you're looking for a sprawling RPG experience like Slay the Spire, you'll be disappointed. The meta-progression is pretty lean; it's a pure puzzler first and a deckbuilder second. At $6.99, it's a fair price for the polish, but you're paying for a very specific, niche experience. You'll spend your time alternating between simple 2+2s and sweating over complex strings of operators to hit a precise number. It's tight and clever, but it doesn't try to be more than it is.
Key Features
- Combine number and operator cards
- Four distinct game modes
- Math-fueled target solving
- Low price point
Screenshots
Verdict
Grab this if you want a clever, tight puzzler that makes you feel smart. Skip it if you hate math or want deep RPG meta-progression, as the systems are lean. 7.5/10.
View on Steam →* Price at time of publication (checked 28.06.2026). Prices may vary by region and are subject to change. This is an editorial review, not a commercial offer.