Grid Games
Mix, structs, pattern matching
Model board state and player turns while building classic grid-based games.
5 Little Potions, expanded edition
Learn Elixir and Phoenix LiveView by building playable games
Learn functional programming the practical way: by shipping small, focused Elixir projects that grow from a terminal warm-up into five substantial game builds.
Get the Expanded Edition ($35)
Turn abstract concepts into working software
Functional programming can feel abstract. Immutability, pattern matching, processes, and message passing make sense in theory, but they click faster when you use them to build something you can play. 5 Little Potions turns those ideas into practical Elixir projects with visible feedback at every step.
What's New in the Expanded Edition?
- Updated chapters for modern Elixir, Phoenix, and LiveView workflows.
- Expanded explanations around architecture, state, processes, and testing.
- A new multiplayer Garden Keeper project that brings PubSub and Presence into play.
The 5 Potions You Will Build
After an introductory Guessing Game, the book moves through five fuller projects that layer on Mix, LiveView, process state, and multiplayer Phoenix patterns.
Flappy Phoenix
LiveView state and events
Build a browser game that responds to player input and updates in real time.
Text Adventure
Graphs and command parsing
Create a larger world with rooms, edges, commands, and deeper state.
Space Merchant
GenServers and process state
Use a server process to run a text-based simulation with turns, markets, and events.
Garden Keeper
PubSub, Presence, multiplayer LiveView
Finish with a shared real-time browser game where connected players affect one world.
Start building in Elixir today
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