# Engi — Form & Emptiness — Weave the thread, or sever it

> Weave the thread, or sever it (iPhone/iPad app by takeaki ishiyama.)

- Source: https://appshunter.io/ios/app/engi-form-and-emptiness/id6809330423 (this page in markdown: same URL + `.md`)
- Developer: [takeaki ishiyama](https://appshunter.io/developer/6809330425)
- Category: Games, Board, Strategy
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.0 · 14 MB
- Languages: American English, Japanese
- Released: 2026-09-18
- Data updated: 2026-10-24

## What is Engi?

On the board, all is originally emptiness (kū).
A form can exist only while it holds a thread of connection to a Source.

FORM weaves threads and kindles shapes.
THE VOID severs threads and returns all to emptiness.
The theme is 色即是空 — what fills will wane; what is bound comes undone.

RULES
• Form: extend threads from the Sources and kindle shapes; light all three Shrines to win.
• The Void: sever threads. A form cut off from every Source collapses — and the collapse cascades. Hold off Form's completion for 19 rounds to win.
• A severed thread re-knits after a few moves; bind your threads into a thick loop and no single cut will break it.

FEATURES
• A 1-minute interactive tutorial — learn "the thread" and 色即是空 on the real board.
• Solo Trials — six stages of a steadily sharper Void.
• Free play — Form, Void, or watch two AIs.
• iOS Haptics — feel every connection, severance, collapse, and victory.
• Fully offline — no network, no ads, no tracking.

A still board and a clear tone. The deeper you think, the more the breath of connection reveals itself.
Impermanence, in a single move.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Unlock the Void | $1.99 | one-time |


## Is Engi safe?

Not enough ratings yet to assess Engi.

## Is Engi legit?

Engi — Form & Emptiness appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Engi is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 4 releases)

### 1.1 — 2026-10-15

The Void is now free to play from the start

### 1.0.2 — 2026-09-25

Version 1.0.2
Fixed a minor issue.

### 1.0.1 — 2026-09-24

Version 1.0.1
Added a new background.
Also includes minor bug fixes and improvements.

### 1.0 — 2026-09-18

No release notes.

## Apps similar to Engi

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Sengoku Fubu](https://appshunter.io/ios/app/sengoku-fubu/id1434020928) | 4.5 (402) | Free | Games |
| [Kingdom Rush Frontiers TD](https://appshunter.io/ios/app/kingdom-rush-frontiers-td/id598581396) | 4.9 (16,466) | $1.99 | Games |

## More apps by takeaki ishiyama

- [One Square: Spot the Odd One](https://appshunter.io/ios/app/one-square-spot-the-odd-one/id6814130720)
- [GEMSEED](https://appshunter.io/ios/app/gemseed/id6820779204)

All apps by takeaki ishiyama: https://appshunter.io/developer/6809330425

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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 2026-10-24.*