ConCrud Zelda Rides gameplay at an LVCC-inspired DEF CON map

Welcome, DEF CON attendees

GameChangers AI at DEF CON

Thank you for joining our Friend or Foe talk.

Meet the open-source badge, then defend the network in a new game Zelda created just for the con.

Play ConCrud Open DC34 Badge Workbench Explore Friend or Foe
Zelda holding the triangular Friend or Foe DEF CON badge
Zelda with the Friend or Foe badge she helped inspire.

A note from Zelda

I made this game just for DEF CON.

Hi, DEF CON! Please try ConCrud: Zelda Rides and help Commander Zelda defend the network. Thank you for playing and supporting games made by kids!

- Zelda

Build and upgrade six defenses across five LVCC-inspired maps, survive tower raids and bosses, and unleash the one-shot Ash Kitty power-up.

Play Zelda's new game
Friend or Foe arcade-inspired logo
Friend or Foe artwork created with Codex ImageGen.

Friend or Foe

Thanks for showing up curious.

Friend or Foe is an open-source ESP32-S3 badge for practical RF awareness. It listens passively for nearby broadcast evidence, explains useful signals on-device, and can grow from a conference wearable into a fixed sensor node.

Walk-up awareness See useful privacy and drone signals without a cloud account.
Open source Study the hardware, firmware, Android app, and backend on GitHub.
Built to keep learning Reflash it, extend it, or turn it into part of a sensor network.
View Friend or Foe on GitHub

Why we build

Kids should get to build the future.

GameChangers AI is a 501(c)(3) nonprofit creating free, hands-on ways for young people to explore AI, code, systems thinking, and responsible invention.

Visit the community arcade Learn about our mission

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