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They Are Billions

They Are Billions

They Are Billions is a Steampunk strategy game set on a post-apocalyptic planet. Build and defend colonies to survive against the billions of the infected that seek to annihilate the few remaining living humans. Can humanity survive after the zombie apocalypse?

85%
Very Positive
DeveloperNumantian Games
PublisherNumantian Games
Release DateJun 18, 2019
-10%
$29.99$26.99
Peak Players22.3K
Metacritic77
PlatformsWindows
Strategy
AI Review Summary

They Are Billions is a punishingly difficult steampunk RTS that challenges players to build and defend colonies against massive zombie swarms. While it offers immense replayability and a unique pause-and-plan mechanic, it is heavily criticized for a 'one-mistake' failure system and a campaign that feels tedious compared to its survival mode.

Pros

  • Exceptional replay value and longevity, with dedicated players logging over 1,500 hours.90%
  • The active pause mechanic allows for deep strategic planning in a high-pressure environment.80%
  • Atmospheric sound design that effectively creates a sense of psychological warfare and tension.70%
  • Delivers a focused and uncompromising hardcore strategy experience that rewards careful base expansion.80%

Cons

  • Extremely punishing failure states where a single missed zombie can instantly end a long session.90%
  • The campaign mode is frequently described as tedious, poorly balanced, and inferior to survival mode.80%
  • Lack of mid-mission saves and game speed controls makes long levels feel like a waste of time upon losing.70%
  • The campaign tech tree can be unforgiving, potentially leading to soft-locked or unbeatable scenarios.60%

Notable Mentions

  • Over 80% of reviewers have played for more than 10 hours, indicating high engagement despite the difficulty.
  • Reviewers frequently debate whether the game is a traditional RTS or a specialized Tower Defense hybrid.
Confidence: 81%
Based on the 73 most relevant reviewsGenerated on Aug 9, 2026
Game Vitals

Live snapshot

Player Activity

Current peak
1.9K
Peak · last 90 days
3.7K
All-time peak
22.3K

Price

Current price
$29.99$26.99-10%
Lowest tracked
$22.49since Jan 6, 2026

Review Sentiment

Launch week
—
Last 30 days
78%
All-time positive
85%
Review Statistics
Total Reviews51.4K
Positive: 43.7K (85%)Negative: 7.6K (15%)

0%

Reviews from Steam Deck

0%

Dev Response Rate

302h

Avg Playtime at Review

84%

Credible Reviews