# Flat Machine: Post-Apocalyptic

> Defend a dying world. Pixel-art tap battles, choices, multiple endings.

Canonical page: [https://chrome-stats.com/d/com.zxima.gatekeeper](https://chrome-stats.com/d/com.zxima.gatekeeper)

## Overview

- **ID:** `com.zxima.gatekeeper`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** 合同会社ズィーマ
- **Category:** GAME\_ADVENTURE
- **Downloads:** 45,581
- **Rating:** 4.70 / 5 (1,638 ratings)
- **Version:** 2.15
- **Last updated:** 2026-07-25
- **First published:** 2023-12-10
- **Publisher country:** JP
- **Size:** 68 MB
- **Data as of:** 2026-09-30
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.zxima.gatekeeper)
- **Website:** [https://zxima.com/](https://zxima.com/)
- **Privacy policy:** [https://zxima.com/privacypolicy/](https://zxima.com/privacypolicy/)

## Description

**Flat Machine** is an engaging Chrome extension game set in a post-apocalyptic future where you play as a limb-less, memoryless gatekeeper robot protecting a settlement. Encounter diverse visitors including mutants, thieves, and even rogue microwaves as you defend the last refuge of humanity.

Experience ultra-simple but intense battles that rely on perfect timing and strategic item combinations. Participate in various dynamic events featuring monsters, bounty hunters, and suspicious characters, ensuring no two days are the same. Your choices throughout the game influence multiple possible endings, encouraging players to strive for the true happy ending. Enjoy the complete gaming experience for free, with optional in-game purchases to skip ads and enhance gameplay.

## Rankings

- #313,732 — Overall
- #9 — machine

## Permissions and access

### Permissions

- `android.permission.ACCESS_ADSERVICES_AD_ID`
- `android.permission.ACCESS_ADSERVICES_ATTRIBUTION`
- `android.permission.ACCESS_ADSERVICES_TOPICS`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.INTERNET`
- `android.permission.WAKE_LOCK`
- `com.android.vending.BILLING`
- `com.android.vending.CHECK_LICENSE`
- `com.google.android.gms.permission.AD_ID`
- `com.zxima.gatekeeper.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

## Review summary

Flat Machine is praised for its charming pixel art, engaging simple turn-based combat, optional ads, multiple endings, and customization options. However, multiple reviews mention limited inventory space, short and repetitive gameplay, frustrating RNG elements, some translation issues, and a desire for more depth and variability in the story and events.

### Pros

- Stylized pixel art and unique character/enemy designs with charm.
- Simple yet engaging turn-based combat mechanics requiring strategic choices.
- Multiple endings and an unlockable endless mode add replayability.
- No forced ads; ads are optional and provide helpful boosts without being intrusive.
- Fun customization and equipment/build variety enhancing gameplay experience.

### Cons

- Limited inventory slots (around 8) causing stress and restricting item management.
- Game length is short and can feel repetitive after multiple playthroughs.
- Some reliance on RNG/drop rates can be frustrating and affect progression.
- English translation contains errors impacting story clarity.
- Story depth and variability are limited, with some players desiring more randomized events and variations.

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.zxima.gatekeeper)