{
  "template": "echo-vale",
  "title": "Echo Vale",
  "description": "Tune repeating echo stones to match a target beat pattern across a glowing valley timeline.",
  "controls": "Set each stone's start beat and interval, press Play to preview the bar, then Check to see if your pulses match the target exactly.",
  "genre": "rhythm logic puzzle",
  "mechanic": "configure repeating start-and-interval pulse generators to reproduce an 8-beat target pattern"
}