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Addie Shen

Demo available

Unexpected Accessories LLCDiscovered Sep 21, 2026

About the game

Addie Shen is a math based puzzle shooter. Play solo, team up in co-op, or practice your skills to stop the evil PEMDAS minions. Can you save the world with math?

Original Steam description

Addie Shen is a first-person puzzle shooter where blasting the right answer is the name of the

game. Solve equations, environmental puzzles, and fight enemies, solo or side by side in local

co-op. It’s the kind of math game you wish you’d had growing up: fast, funny, and not like a

worksheet in all the best ways.

Difficulty settings run from algebra to calculus, so everyone from a student building confidence

to a mathlete looking for a real fight can feel fulfilled. Addie Shen was created in response to the

post-pandemic learning gap, with exercises inspired by real after-school programs.

STORY MODE

Jump between quadrants, dodge tricky tangents, and foil the scheming alien Ianfinite’s

calculated plans across four missions packed with math puns. Procedurally generated

equations mean no two runs play the same!

PRACTICE MODE

Flash cards reinvented! Customize the operations and difficulty, then train your wits against

fast-paced waves of enemies.

MULTIPLAYER MODE

Grab a friend and share the screen for four split-screen modes. Whether you’re cooperating or

competing, it’s math-driven mayhem at its finest.

  • Math difficulty from algebra to calculus

  • Story Mode with 4 missions and lots of math puns

  • Practice Mode with customizable challenges

  • 4 split-screen multiplayer modes for 1-2 players

  • Environmental puzzles and procedural enemies

Demo and release information

A Steam demo was found at the latest check. Confirm it is still available in your region on Steam before downloading.

Steam demo, playtest and Early Access: what is the difference?

Information & artwork: Steam · Last checked UTC