SONDER

Why this exists: Every NPC you've ever met in a game was faking it. A looped smile. One line of dialogue. They forget your face the moment you turn around. Props wearing people.

Sonder changes that. It gives NPCs a real engram — a trace of what you did — stored in a knowledge graph. Insult the blacksmith on Monday. Quit the game. Come back on Thursday (or restart the server). He's still cold to you. Not because of a flag. Because the graph remembers.

How the demo works (real-game style):

• Travel between locations — this prefetches memories in the background (exactly what a game engine does on scene load)
• Take actions → they are written to the NPC's permanent memory via the sonder-engram SDK
• Click [restart server] → fresh process, same player_id → NPCs still remember (the graph survived)
• The Oracle lets you query what NPCs actually recall about you
• Post in the village group chat — every NPC remembers it. They react automatically with @mentions
• Word travels: deeds at the forge or tavern reach Elara the seer as gossip — visit the grove and she'll hint at what you did elsewhere
• Your name is your save — return with the same name and the town still remembers you (it stays logged in on this browser too)
• Visible timing + caches show you the real cost and how games hide it

All memory is real. No scripts, no fake responses. Powered by the open-source sonder-engram SDK + Cognee.