# FLOAT - River & ZEN & Chill — Remove "River Litter"

> Interactive river litter clean-up game with real-world environmental impact. (iPhone/iPad app by ARAKAWA RIVER CLEAN-AID FORUM, N.P.O..)

- Source: https://appshunter.io/ios/app/float-river-and-zen-and-chill/id1581535238 (this page in markdown: same URL + `.md`)
- Developer: [ARAKAWA RIVER CLEAN-AID FORUM, N.P.O.](https://appshunter.io/developer/1581535240)
- Category: Entertainment, Education
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 12.0 · 822 MB
- Languages: English
- Released: 2021-11-30
- Data updated: 2026-07-09
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/float-river-and-zen-and-chill/id1581535238/reviews.md

## What is FLOAT?

Award-winning work of the Digital Picture Book Award(Japan)

FLOAT is an app that explores the issue of river litter.

In this version, you can play in four different rivers: the Arakawa River, the Nile River, the Yellow River, and the Mekong River.

[How to Play]
1. Choose a river.
2. Tap or swipe to create waves, move the litter, and collect it in the white basket.

[Time Warp]
With the Time Warp feature, you can travel back in time.
The types of litter and the creatures you encounter will change depending on the era.

[ZEN Mode]
Tap the switch in the upper-left corner of the play screen to open the options menu.
From there, you can turn on "ZEN Mode".

[Connecting the Game to the Real World]
By watching ads, making in-app purchases, or buying NFT art, you can support real-world river clean-up efforts.
Our team will actually collect litter from real rivers.

The following options are available:

#Plan-A
Watch a 30-second video ad
- Receive 4,000 in-app coins
- Our team will collect 2 pieces of litter from a real river

#Plan-B
Unlock 1 stage ($0.99)
- Our team will collect 4 pieces of litter from a real river

#Plan-C
Unlock all stages ($9.99)
- Our team will collect 15 liters of litter from a real river
*Any future locked content will be automatically unlocked after updates.

#Plan-D
Purchase special NFT art on OpenSea (FLOAT-RiverLitter)
- Our team will collect 1 liter of litter per 0.002 ETH
*Prices vary depending on the NFT.
*The collection amount may change if the price of Ethereum fluctuates significantly.

https://opensea.io/FLOAT-RiverLitter

*Please note:
In Plans B and C, litter collection is a secondary feature. The main benefit is unlocking game content.

For now, clean-up activities will take place on the left bank near the mouth of the Arakawa River (about 3 km upstream from Tokyo Bay), where litter tends to accumulate.

[Activity Reports]
You can check the total number of ad views and purchases on our website.
In the app, tap the "i" icon → tap "FLOAT REPORT" to visit the site.

Please note that updates may take a few weeks to appear.

We will regularly share:
- Total ad views
- Total purchases
- Proof photos of collected litter

For NFT sales, please check the OpenSea page.

This project is a social experiment.
We will continue improving it through trial and error.

All proceeds will be used for practical and educational efforts to address river and ocean litter.

[Notes]

#1 About Plastic
This app does not promote eliminating or avoiding plastic.
Plastic is a useful and important material in modern life.

We believe the real issues are:
- Illegal dumping
- Improper waste management
- Excessive use

#2 Performance Tips
If the water movement feels heavy:
Tap the gear icon on the title screen → tap the monitor icon → set graphics to "MID" or "LOW".

[Credits]
Design / Illustration / Text / Production: Tsutomu Kakinuma
Programming: Keijiro Iwase
Supervision: Kazuyuki Imamura
Music: K. Takeshi
Sound Effects: Yuki Horino

[Special Thanks 1]
180 Degrees Consulting Japan
Hibiki Abe / Ruki Ashikaga / Shunsuke Imura

[Special Thanks 2]
Attkun, Ayana, Joe, Jun, James, Ken, Kurikuri, Kouhei, Minami, Mitsuharu, Shiratama

FLOAT is supported by the Rethink Project and the River Fund.
https://rethink-pjt.jp

[Contact]
renraku@cleanaid.jp

## Key features

- Virtual river litter clean-up
- Four distinct rivers to play
- Time Warp feature for historical litter
- ZEN Mode for relaxation
- Support real-world clean-up
- In-app purchases and NFT art options

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Unlock all features | $9.99 | one-time |
| Unlock-ArakawaRiver-1975 | $0.99 | one-time |
| Unlock-ArakawaRiver-1875 | $0.99 | one-time |
| Unlock-NileRiver-1875 | $0.99 | one-time |
| Unlock-NileRiver-1975 | $0.99 | one-time |
| Unlock-YellowRiver-1875 | $0.99 | one-time |
| Unlock-MekongRiver-1875 | $0.99 | one-time |


## Recent user reviews (10 of 31)

All indexed reviews: https://appshunter.io/ios/app/float-river-and-zen-and-chill/id1581535238/reviews.md

### 4/5 — 面白い！

*2024-01-12, version 1.1.2*

友達とボランティア活動の一環でやったけど斬新で面白かったです！

### 5/5 — 今までにない新鮮さ

*2024-01-09, version 1.1.2*

ボランティア応募からダウンロードをしてプレイをしました。音楽やデザインもシンプルで、操作もしやすかったです。様々な河川を選べるところがすごく良かったです。このアプリを使うことで、手軽に誰でも環境問題について考えることが出来るのでおすすめのアプリです。

### 5/5 — 新鮮でした

*2024-01-05, version 1.1.2*

ゲームとは言え、河川がテーマで流れてくるビンを無くす事での爽快感は大変良いと思いました。
リアル世界でも、キレイにしようというマインドへの、ちょっとしたキッカケになると思います。
美しい河川を切に願います。

### 5/5 — ゴミについて考えさせながら楽しめるアプリ

*2023-12-15, version 1.1.2*

良い点
・流れてくるゴミを網に入れるというシンプルな動き
・急がず遅過ぎずのゲームスピード
改善意見
・マイナス制度があるけれど、網を動かせない仕様ですぐマイナスになってしまうのが残念

### 2/5 — 大学の講義を受講してダウンロードしました。

*2023-11-15, version 1.1.2*

プレイしてみて、どのような川ゴミが流れてるかを学べる良い教材ですが、やはり面白みが足りなく中毒性も少ないように感じました。

コンボを狙うゲームという事ですが、それに加えて集めたゴミを種類毎にカウントしたり、集めたゴミを説明する図鑑を作る等、コレクション機能があると中毒性が増すと思います。
ついでに魚の種類も豊富なのでその図鑑がないのは勿体無く感じました。

また、「時間が経つと落ちてくるゴミの速さがスピードアップして一定数逃すとゲームオーバーになる（これは一例ですが）」のようにゲーム性に難易度を設けると海ごみに興味が無い人でも楽しめるようになると思います。

また、オンライン機能で世界の人の本日のハイスコア、今までのハイスコア等をランキングで表示すると競争性が加わって面白いと思いました。

他にもコレクションにレア度をつけたり、全部集めるとシークレットのゴミや魚、ステージが解放される等コンプリートを目指すと良い感じの目標ラインが設定されてプレイヤーにそこまではプレイしようと考えさせると一人当たりのプレイ時間が増すと思いました。

### 3/5 — コインの利用法？

*2023-08-04, version 1.1.2*

せっかく貯めたコインでガチャができたり、
動物を飼えたりするともっと面白く学べるかも知れない。

### 4/5 — 考えられる

*2023-07-18, version 1.1.2*

川によって流れてくるゴミの量が違ったり、ゲームが 永遠と続くため河川ゴミについて考えられる
ゲームだけでなく、説明もあるためしっかり学べる

### 5/5 — 楽しかった！

*2023-07-13, version 1.1.2*

めっちゃ面白くて、ゴミのことをしっかり学べました！

### 4/5 — ボランティアの一環として

*2023-07-12, version 1.1.2*

河川のゴミ問題に取り組むきっかけとしてアプリを利用。ゴミに関する豆知識などもあり、充実。

### 5/5 — 今までにないアプリ

*2023-07-10, version 1.1.2*

アプリを通して河川ゴミに関する環境問題が学べて楽しい
あと単純に楽しい

## Frequently asked questions about FLOAT

### How do I play FLOAT?

In FLOAT, you choose a river, then tap or swipe to create waves, move litter, and collect it in a basket. You can also use the Time Warp feature to see how litter changes over different eras.

### What is ZEN Mode in FLOAT?

ZEN Mode in FLOAT is a special mode that can be activated from the options menu on the play screen. It offers a more relaxing and focused experience without the usual game elements.

### How does FLOAT support real-world river clean-up?

You can support real-world river clean-up by watching ads (Plan-A), making in-app purchases to unlock stages (Plan-B, Plan-C), or buying NFT art. These actions fund the collection of actual litter from rivers.

### What are the in-app purchase options in FLOAT?

FLOAT offers in-app purchases to unlock stages, starting at $0.99 for one stage and $9.99 to unlock all stages. Purchasing these supports litter collection and unlocks game content.

### Does FLOAT have ads?

Yes, FLOAT contains advertisements. You can watch a 30-second video ad to receive in-app coins and support the collection of 2 pieces of litter from a real river.

### How often is FLOAT updated?

Updates for FLOAT may take a few weeks to appear. The developers regularly share activity reports, including proof photos of collected litter, on their website.

### What platforms is FLOAT available on?

FLOAT is available on iPhone, iPad, and iPod. The app has an age rating of 4+.

### Can I see proof of the real-world clean-up efforts from FLOAT?

Yes, you can check the total number of ad views and purchases on the FLOAT website. The app provides a link to 'FLOAT REPORT' where activity reports and proof photos of collected litter are shared.

## Version history (last 5 releases)

### 1.1.5 — 2026-04-02

This update from Apple will improve the functionality of this app. No new features are included.

Added content about types of river litter

### 1.1.4 — 2024-09-05

In this version, we've fixed an issue affecting the ripples on the water surface.

### 1.1.3 — 2024-09-02

We made minor fixes. We appreciate your continued support of FLOAT.

### 1.1.2 — 2022-09-09

Minor Correction

### 1.1.1 — 2022-08-28

(1)Limited edition NFT art is now available (OpenSea / FLOAT-Riverlitter).
For every 0.002 ETH of NFT art purchased, our staff will collect 1 liter of river litter.

(2)Minor bug fixes

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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 2026-07-09.*