Glyphia — a world where Greek letters live. Every truth, every law, held together by flawless equations. Until an undefined operation appeared. And reality began to fracture. You are the Operator. Together with π — "Pion", a lifeform born inside the system, you must rewrite the broken equations. But the calculations grow unstable. Impossible results emerge from the void. And then you realize the truth: This world is running on something older. A system that was never meant to be found. 💡 Pion's Theorem reinvents arithmetic as a strategic card game. Every number, every operator, every bracket is a card — and every card is part of your deck. Combine number cards, operators (+, −, ×, ÷, ^...), and special cards to construct an expression that hits the target value. Simple on the surface — but once card weights, use counts, and sticky effects come into play, every round turns into a fresh logical puzzle. 🎮 Four Distinct Modes 🧩 Puzzle — The classic challenge: use the given cards to reach the target number. 45 handcrafted stages that also serve as a gentle tutorial introducing every core system in the game. 📅 Daily Challenge — A new puzzle every day. Solve it to earn Kahlua. 🏆 Competitive — Hit multiple objectives at once (≥, digit counts, totals…) with a fresh card set each week, and climb the global leaderboard. ♟ Strategy — The deepest mode. Between rounds, use card management actions to dynamically reshape your deck. You carry over whatever cards you have left — so survival itself becomes the challenge. ✨ Key Features 🃏 True Deckbuilding — Fuse Cards, Increase Weight, Increase Uses, Unban Card, Remove Sticky, Sell Cards — full-featured deck construction 🎴 55 Cards in Total — From essential number cards to a colorful lineup of special cards with unique effects 💎 Card Attributes — Sticky cards can't be removed from your play deck, Banned cards are locked out this round, Weight affects objectives and scoring, and Use Count limits how often a card can fire. This is not just arithmetic. 🎯 Records — Track your stats and chase 52 achievements 📚 Collection — A full card codex of everything you've discovered 🥛 Kahlua — The in-game currency, spent on hints and card management 📐 Mathematical Precision — Adjust angle units (Degree/Radian), sorting, and more 🏅 Global Leaderboards — Compete with the sharpest minds on the planet 🧠 You'll Love This If You Enjoy Roguelike deckbuilders like Slay the Spire or Balatro Number puzzles, Sudoku, or the 24 Game Games that feel light at first, but keep getting deeper Platform: PC (Windows) Players: Single-player Languages: English, Korean Release: Late 2026 © 2026 Kahlua Soft. All rights reserved.