# Think Tank: Word Game — Find words, collect fish!

> Free word puzzle game where you find words, collect fish, and relax. (iPhone/iPad app by Guillaume Riesen.)

- Source: https://appshunter.io/ios/app/think-tank-word-game/id6759264342 (this page in markdown: same URL + `.md`)
- Developer: [Guillaume Riesen](https://appshunter.io/developer/1877719810)
- Category: Games, Education, Puzzle, Word
- Price: Free with in-app purchases
- Rating: 5.00/5 from 4 App Store ratings · 2 written reviews indexed
- Age rating: 9+
- Requires: iOS 16.0 · 89 MB
- Languages: American English
- Released: 2026-07-03
- Data updated: 2026-07-27
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/think-tank-word-game/id6759264342/reviews.md

## What is Think Tank?

Solve puzzles to collect fish! Think Tank is a relaxing, 100% free word game. Each puzzle is just three letters. Your goal is to make words by adding up to three more. Like, 'T N K' can become 'T h i N K' or 'T a N K'. It's so simple that you can play in your head - like chewing gum for your brain!

You can choose from casual (kid-friendly), standard, or challenge (for word nerds!). I hand-tiered 28,000+ words by difficulty to create these modes. You can hop into quick play for a minute or settle in and take on the campaign for an hour. Hatch eggs based on your streak in the daily challenge, or challenge a friend with pass-and-play versus mode. I've even included a night light mode so you can enjoy the glow and calming sounds of your favorite tank as you fall asleep. 

Features
- Hints and definitions for 28,000+ words - learn as you play!
- Over 100 fish to collect, each featuring a real photo and fun facts.
- 10 themes, each with their own calming underwater soundscapes.
- A timed night light mode that turns your phone into a tiny aquarium.
- 150 hand-curated campaign puzzles, quick play, antimed pass-and-play versus mode
- Daily Challenge that rewards hatchable eggs. Maintain your streak for a rarity bonus
- No account required. All content accessible for free. Optional payment removes ads

Think Tank was designed to mellow quiet mornings and loud commutes. You can play in long lines, or at nap time.

If you love words or nature, I made this for you. 
Enjoy!

## Key features

- Form words from three-letter bases
- Collect over 100 unique fish
- 10 calming underwater themes
- Timed night light mode
- Multiple game modes (casual, standard, challenge)
- Daily Challenge with streak bonuses
- Pass-and-play versus mode

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Ad-Free Forever | $3.99 | one-time |


## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/think-tank-word-game/id6759264342/reviews.md

### 5/5 — Words and fish

*2026-07-09*

Learn about fish, think hard about words, what more could you want?

### 5/5 — Soooo addicting, amazing game

*2026-07-08*

Stop reading this and just download and play it

## Frequently asked questions about Think Tank

### What is Think Tank?

Think Tank is a free word game where you solve puzzles by adding letters to three-letter combinations to form new words. It features over 100 fish to collect and 10 unique themes.

### How do you play Think Tank?

You are given a three-letter base and must add up to three more letters to create valid words. The game offers casual, standard, and challenge modes, with puzzles designed for different skill levels.

### Can I play Think Tank offline?

Yes, Think Tank can be played offline. The description mentions playing in long lines or at nap time, implying offline accessibility for core gameplay.

### Does Think Tank have ads?

Yes, Think Tank contains advertisements. An optional payment is available to remove these ads.

### What age rating is Think Tank?

Think Tank has an age rating of 9+. This suggests it is suitable for children aged 9 and older.

### How often is Think Tank updated?

Think Tank was last updated on July 7, 2026, with version 1.0.2. This indicates recent development activity.

### What makes Think Tank unique?

Think Tank combines word puzzles with a fish collection mechanic and relaxing underwater themes. It also features a unique night light mode for bedtime relaxation.

### Is there a way to play Think Tank with friends?

Yes, Think Tank includes a pass-and-play versus mode, allowing you to challenge a friend directly on the same device.

## Version history (last 4 releases)

### 1.0.3 — 2026-07-24

Improved leaderboard experience for daily challenges.

### 1.0.2 — 2026-07-07

I've (attempted to) fixed a few bugs, and added a public leaderboard for daily challenge times by difficulty, and improved reward flows.

### 1.0.1 — 2026-06-10

Fixed a few bugs and performance issues. Changed the order of some campaign levels for a smoother onboarding experience. Updated the tutorials.

### 1.0 — 2026-06-04

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-27.*