CHAIN REACTIONWord Connection Game
TREN
App

A mobile knowledge-chain game

Chain Reaction. One connection.A wholenew world.

Find the right concept among four choices. Use knowledge and speed to turn every correct answer into the chain's next link.

Try your first connection
On the App StoreComing soonOn Google PlayComing soon
CURRENT CHAIN01 — 04
  1. 01Apple
  2. 02iPhone
  3. 03iOS
  4. 04App Store
Every connection is a new beginning.
CHAIN REACTION / Word Connection GameScroll to follow the chain

THE CORE LOOP

One concept. Four choices. One correct link.

Find the right option and it becomes the chain’s next link, taking you to the next connection.

Interactive gameplay preview
Choose the correct next connectionAPPLE
  1. 01Read the concept
  2. 02Choose the right link
  3. 03Keep the chain going

MAIN MODE

Chain Journey

Progress through 10 worlds and 100 levels. Every completed level extends the route and adds each earned star to your journey.

Worlds
10
Levels
100
Progress
★
  1. 01
  2. 02
  3. 03
  4. 04
  5. 05
  6. 06
  7. 07
  8. 08
  9. 09
  10. 10

Next level · 05

  1. 01Spark01–10
  2. 02Flow11–20
  3. 03Discovery21–30
  4. 04Transformation31–40
  5. 05Connections41–50
  6. 06Discovery51–60
  7. 07Mastery61–70
  8. 08Synthesis71–80
  9. 09Insight81–90
  10. 010Horizon91–100
OFFLINE

SECOND MODE

Endless Chain

Build up to 100 links in one run. A wrong choice ends the chain; a new run opens a new route.

  • Up to 100 links
  • Playable offline
  • A wrong choice ends the run
  • Live leaderboard for linked accounts
100-link run limit

MASTERY MILESTONES

Every link brings a new milestone closer.

As the chain grows, you progress through the 10, 25, 50 and 100 milestones. Final milestone: Legend.

  1. 10Normal
  2. 25Good
  3. 50Genius
  4. 100Legend

KNOWLEDGE UNIVERSE

One correct answer opens another world.

Concepts never stay inside one topic. The chain creates natural transitions across different knowledge domains.

Technology + ScienceTechnology & Brands · Science & Nature
Geography + HistoryGeography & Countries · History & Notable People
Film · Music · LiteratureFilm, TV & Characters · Music & Art · Literature
Sports + GamesSports · Games & Pop Culture
Everyday linksFood, Drinks & Products · Daily Life & General Knowledge
You find one link.A new domain opens.

LIVE COMPETITION

Compare your chain with the world.

Link your account with Apple, Google, or email and follow your verified best Endless Chain result across global, weekly, and friends leaderboards.

Live leaderboardENABLED
Live leaderboard
RANKPLAYERCHAIN
Verified results from linked accounts

Your username, friend handle, built-in avatar, and verified best result may appear on social surfaces; personal game history stays private.

FAQ

Quick answers

How do you play Chain Reaction?

Find the option directly related to the active concept. The correct option becomes the next active concept and the chain continues.

What is Chain Journey?

It is the main level-based mode. Progress through 100 levels across 10 worlds and collect your stars.

How does Endless Chain work?

The offline mode lets you build up to 100 links in one run. A wrong choice ends the run; when your account is linked, your verified best result can join the live leaderboard.

Is the leaderboard live?

Yes. Link your account to view global, weekly, and friends Endless Chain leaderboards.

Can I play on this website?

No. This site introduces the game and its modes; the real game is played in the mobile app.

THE NEXT CONCEPT IS WAITING

Choose the first link.

Advance through Chain Journey or test your limit in offline Endless Chain.

On the App StoreComing soonOn Google PlayComing soon