# Vein: Dungeon Ecosystem — Dig, Grow, Defend the Core

> Dig, Grow, Defend the Core (iPhone/iPad app by Hiroyuki Sonozuka.)

- Source: https://appshunter.io/ios/app/vein-dungeon-ecosystem/id6799141706 (this page in markdown: same URL + `.md`)
- Developer: [Hiroyuki Sonozuka](https://appshunter.io/developer/1528423565)
- Category: Games, Simulation, Strategy
- Price: Free
- Age rating: 12+
- Requires: iOS 17.0 · 203 MB
- Languages: American English, Arabic, Bangla, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French (France) and 34 more
- Released: 2026-08-22
- Data updated: 2026-09-16
- User reviews in markdown: https://appshunter.io/ios/app/vein-dungeon-ecosystem/id6799141706/reviews.md

## What is Vein?

The tunnels you dig become the battlefield. The ecosystem you grow becomes your defense.

Vein is an ecosystem-driven roguelike defense game. Excavate an underground dungeon, raise autonomous creatures, and stop invading squads from carrying your Dungeon Core back to the surface.

BUILD A LIVING DUNGEON
Dig new routes, connect the Core to magic walls, and shape a habitat where creatures feed, move, grow, and fight according to their own behavior.

DEFEND THE CORE
Read each invading squad's roles and classes, then use terrain, creatures, facilities, and carefully timed interventions to break their route to the Core.

EVOLVE EVERY RUN
Choose one of three upgrades when your dungeon levels up. Strengthen creatures, expand the magic vein, improve the environment, and create a different strategy each run.

EXPLORE A COMPLETE CAMPAIGN
Fight through 12 distinct locations, 36 stages, and 108 assaults. Settle your run, carry earned DP forward, summon creature cards, and begin the next dungeon with new possibilities.

FEATURES
• Real-time ecosystem and dungeon defense
• Route-shaping excavation and Core placement
• Creatures with different needs, movement, and combat behavior
• Invaders with distinct roles, classes, and priorities
• Three-choice roguelike upgrades
• Creature codex, rare forms, awakening, and summons
• Pixel-art worlds that change from surface to underground

Dig deeper. Grow stronger. Do not let them take the Core.


## Version history (last 5 releases)

### 1.7 — 2026-09-07

- Redesigned the summoning sequence from excavation through fossil-egg hatching.
- Improved enemy attack and movement feedback, plus rendering in crowded creature scenes.
- Improved the starter revive and rewarded-ad revive flow, with additional bug fixes.

### 1.6 — 2026-09-07

- Redesigned the dungeon as a 30×30 field where all 36 stages continue in the same labyrinth, with each stage condensed into three raids.
- Added creature Growth Seeds and Ancient Golem fragments to Growth Boxes, with improved reward presentation and early-game balance.
- Optimized rendering and input response to keep movement and combat smooth in busy dungeons.

### 1.5 — 2026-09-05

- Redesigned the dungeon as a 30×30 field where all 36 stages continue in the same labyrinth, with each stage condensed into three raids.
- Added creature Growth Seeds and Ancient Golem fragments to Growth Boxes, with improved reward presentation and early-game balance.
- Optimized rendering and input response to keep movement and combat smooth in busy dungeons.

### 1.4 — 2026-08-28

- Revamped Home creature summoning with cinematic videos and clearer normal and rare summon sequences.
- Added an option to unlock 2x gameplay speed by watching an ad.
- Creature awakening ranks now strengthen maximum HP and species-specific abilities.
- Improved the presentation of items, surface visitors, and in-game ad sequences.
- Fixed display and progression issues, including the defeat check when a Dungeon Core is carried away.
- Added full in-game localization for 48 languages, including English and Japanese.

### 1.3 — 2026-08-25

- Revamped Home creature summoning with cinematic videos and clearer normal and rare summon sequences.
- Added an option to unlock 2x gameplay speed by watching an ad.
- Creature awakening ranks now strengthen maximum HP and species-specific abilities.
- Improved the presentation of items, surface visitors, and in-game ad sequences.
- Fixed display and progression issues, including the defeat check when a Dungeon Core is carried away.

## More apps by Hiroyuki Sonozuka

- [todo list - ToDo List & Notes](https://appshunter.io/ios/app/todo-list-todo-list-and-notes/id1528423563)
- [FreedomNotification](https://appshunter.io/ios/app/freedomnotification/id1546032332)
- [eawach](https://appshunter.io/ios/app/eawach/id1605326461)
- [9color](https://appshunter.io/ios/app/9color/id1642440226)
- [Alarm sound maker](https://appshunter.io/ios/app/alarm-sound-maker/id6499492585)
- [Punch Power Test-Strength Game](https://appshunter.io/ios/app/punch-power-test-strength-game/id6737435471)

All apps by Hiroyuki Sonozuka: https://appshunter.io/developer/1528423565

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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 2026-09-16.*