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Primitive Brothers : Idle Game

Thundergames
Rating4.8(5K)
PriceFree
Size161 MB
ReleasedOct 2020
UpdatedAug 2026v3.630
App StoreGoogle Play
What's new in v3.630
Read the developer’s release notes

▶ Version 3.60 - World System added - Skin System added - World Monster Book added - World Monster Card added - New Vehicle added - Guild Quest rewards improved - Various bug fixes - Optimization and security enhancements

Source: Apple App Store listing.

Screenshots
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About this game

Primitive Brothers: Idle Game is an idle RPG where players guide their primitive characters through progression and combat. The game focuses on passive advancement, allowing for gameplay during short, interruptible sessions. Its appeal lies in its relaxing, solo experience and high replayability for those who enjoy gradual, hands-off progression.

What players say

Themes from 200 recent Google Play reviews, analysed 28 Aug 2026

Praised
Fun & addictive65Ads not intrusive12
Complained about
Monetisation19Too many ads13Grindy11
Why we tagged it this way

What each behavioural tag is based on

  • Short sessionsRuns are self-contained, so stopping early costs you nothing.
  • InterruptiblePut it down mid-session and pick it up cold.
  • One-handedPlayable with a thumb, in portrait.
  • Plays offlineNo connection needed once installed.
  • No energy timersNothing caps how long you can play.
  • Sound optionalNo audio cue carries information — fine on mute.
  • Low focusPlayable while half-distracted.
Commute
Short, interruptible sessions
Flight
Plays fully offline
In bed
Works muted, one-handed
With friends
Solo only, no multiplayer
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What it costs
DownloadFree
In-app purchases$0.49 - $94.99
AdsYes
Energy timersNone

From the Google Play listing.

Tags
ReplayabilityHigh
StoryNo Story
SocialSolo
DifficultyCasual
GrindHigh
Brain PowerMindless
Story depthNone
PriceP2W
PauseableHigh
VibeRelaxing
OrientationPortrait
RatingEveryone
DeviceStandard
ProgressionIdle
Has ending?Endless
MultiplayerSolo-Only
GenreRpgRpg Idle
✈️ Offline play👍 One-handed🔇 Mute-friendly⚡ No energy timers👶 Parent-friendly
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Primitive Brothers : Idle Game — Search Mobile Games