Duality

Duality gives you two characters to move with one set of inputs. You control two quantum entities at once, each in its own parallel dimension, and every level asks you to bring both to their escape portals while Void Agents hunt them.

The creator says the idea came from brainstorming with AI, mixing a love of games that split your attention with an interest in quantum physics and parallel dimensions. It came together in Claude Code and Three.js and placed 119th of 945 at Vibe Jam 2026.

The hook is the Echo, a mirror of your character that follows your inputs under its own rules, and those rules get more twisted as the levels go on. Each stage plays like a small physics puzzle dressed as survival, where one move changes things in both dimensions.