ECHO ROOM: Time Puzzle

GOODCODE

In-app purchases

About this game

Your most important partner is the person you were seconds ago.

ECHO ROOM is a time-based puzzle game about recording your actions and coordinating with Echoes that replay them in the next loop. Every move becomes part of the next timeline, until several versions of your past self work together to complete one solution.

■ COOPERATE WITH YOUR PAST SELF
Record movement and device interactions across 10-second deterministic loops. In the next loop, your translucent Echo repeats those exact actions. Hold relays, form holographic signal bridges over floor pits, warp through linked phase teleporters, synchronize 3-loop dual-echo gates, and beat timed pulse doors in the right sequence.

■ 10 LABORATORIES, 100 TIME PUZZLES
Master 100 handcrafted levels across 10 distinct laboratories—from Introductory Signal Bridges, Phase Portals, and 3-Loop Dual-Echo Gates in the free trial (Levels 001–010) to Push Crates, Directional Conveyors, Phase Barriers, and Multi-Echo Vaults in the full campaign.

■ CREATE A BETTER RECORD
Earn stars by completing each experiment with fewer loops and fewer moves. Finding a solution is only the beginning; every timeline can be refined.

■ TURN FAILURE INTO A CLUE
Progressive hints and recovery guidance help you understand what went wrong and plan your next attempt without taking control away from you.

■ PRIVATE 2–4 PLAYER CO-OP
Create an invite-only room or join with a short friend code. There is no public matchmaking. Coordinate separate timelines with friends and solve experiments together. A full-game owner can host unlocked full-game levels and invite free-edition friends through Friend Pass.

■ ONE PURCHASE, NO ADS
Levels 001–010 are free to play. Unlock all 100 levels with a single non-consumable in-app purchase. ECHO ROOM contains no ads and no subscriptions.

An internet connection is required for online co-op.

What’s new

v1.0.5 Update:
- Expanded Levels 001–010 free introductory campaign with 5 distinct mechanics: Signal Bridges over Floor Pits, Linked Phase Teleporters, 3-Loop Dual-Echo Synchronization, and Timed Pulse Doors.
- Updated localized level briefings and 3-step tactical hints across English, Korean, Japanese, Simplified Chinese, and Spanish.