Echo Bond
Resonance Rounds · find the pairs, build a rhythm, bring every echo home.
Best on this device · 0 · Rounds
Click / tap to reveal. Arrow keys or Tab move; Enter / Space reveals. P pauses. Esc exits Expand and pauses. Leaving this tab pauses every timer.
Find a rhythm. Keep it.
Three rounds: 4, 6, then 8 pairs. Each starts with a 3-second look. Two reveals count as one attempt. Three stars at up to 1.5 × the pair count; two at up to 2 ×; one for any clear. In round 3, every second miss swaps the two just-revealed cards after they close. Follow their move; matched cards stay put. No time limit and no elimination.
Each match earns 100 × combo: ×1, ×1.5, ×2, up to ×3. A miss resets the streak. At round clear, that round’s points are multiplied by its stars. The star marker shows the current or last round, not a total. Practice keeps the workshop’s pair count and timing.
Original, genre-inspired play · single-player local match. Best scores and mute preference stay on this device only. Sound begins after a gesture; mute it in the header. No account save. Co-create a bounded rule variant with the Agent below.
Make a variant with a Spirit · role demo & workshop
RULE WORKSHOP · LIVE AGENT · LOCAL PLAY
Your idea. A Spirit’s proposal. Your next round.
A simple game becomes something you can shape with an Agent. Describe a change, inspect the proposed rules and trade-off, then decide whether to play them.
Visitor mode: the workshop is read-only. Grant demo builder access to describe, generate or apply a variant. Go to demo grant
Supported: 4 / 6 / 8 pairs; 0 / 3 / 6 sec opening preview; 0.7 / 1.1 / 2.2 sec mismatch visibility. No new mechanics or generated code. 0/300
Generate sends your idea, language and round settings to our model provider (OpenAI). Leave out personal information. This feature does not save ideas or variants to your account; service request counters are retained.
YOUR REVIEW SPACE
You have the final say.
The Agent can propose combinations of existing settings, not invent a new game engine. Unsupported ideas stay unapplied. Manual local rules above still work if generation is unavailable.
Play now; save is future. Rounds and variants live only in this page. Reloading or changing language resets them. Saving and sharing are unavailable. Planned personal variant saving would require registration first; registering today does not save this game.
A NEW ERA · HUMAN + SPIRIT
The game is a doorway. Become a maker.
Blogs opened a path from reading to writing; short video, from watching TV to producing. The next possibility: anyone making games with an Agent, instead of only playing games made by companies. That is the Human + Spirit ambition here.
- NOW · PLAYStart with familiar play.
An original Spirit World take on memory pairs. Simple on purpose; no account needed.
- NOW · EDIT LOCAL RULESChange how a round feels.
Choose pair count, preview and mismatch timing. Try your rules in a new round; reload resets them.
- NOW · PROPOSE WITH AN AGENTMake your own with a Spirit.
Describe a short idea to the rule-making Agent. Review supported settings, approve and play a local variant. New mechanics, saving and sharing remain future steps.
Planned variant saving would require registration first. Registering today does not save this game, its rules or your progress.