Comparison

Subterranean vs Downfall Survival Sim

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Subterranean

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Dig deep in a retro pixel world and see how far underground you can go. Control a small mining vehicle, dig through the earth, and uncover gems, ore, fossils, and other valuable resources. Sell what you find, upgrade your vehicle, and head back down to dig even deeper. Improve your drill, light, cargo, temp, fuel, and hull to stay underground longer and reach rare riches hidden far below the surface. Inspired by classic mining games, this 2D side-scrolling adventure is easy to pick up and satisfying to play, whether you have a few minutes or want to keep digging just one more run. Dig, mine, upgrade, repeat. How deep can you go?

About

Downfall Survival Sim

Lead a group of survivors in a post-apocalyptic wasteland. Manage resources, recruit specialists, and explore dangerous territories to rebuild civilization. Make critical decisions to ensure your settlement's survival against threats.

Highlights
  • Manage resources (food, water, power)
  • Upgrade bunker modules
  • Recruit and level up survivors
  • Explore irradiated regions
  • Research technology
  • Defend against mutants and raiders
  • Optional permadeath
Features
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123 years after WW3 turned the USA into a wasteland, a handful of survivors look to you to rebuild. Downfall Survival Sim is a single-player survival-strategy game. Run a bunker settlement day by day: ration what little you have and decide who eats, who builds, and who walks out into the dust. RATION & BUILD • Balance food, water, power, medicine, scrap, and ammo • Upgrade your bunker modules — hydro farms, water reclaimers, barracks, workshops • Keep integrity and morale up, or watch the colony collapse RECRUIT SURVIVORS • Scouts, guards, medics, engineers, farmers, and traders — each with their own skills and rarities • Survivors level up on missions. Keep them healed and their morale high • Optional permadeath for the brave EXPLORE THE WASTELAND • Send squads across four irradiated regions • Scavenge ruins, rescue strangers, watch the radiation • Trade with passing caravans RESEARCH & DEFEND • Unlock the full tech tree • Hold the gate against mutant packs and raider bands • Fight the battles yourself or auto-resolve them Offline. No ads. No account. Your settlement One optional purchase (Survivor Mode) unlocks a developer God-Mode cheat console for players who want to sandbox. Built by XXI Online Games.

Screenshots

Subterranean4 screens
Downfall Survival Sim4 screens

Verdict

The call

The clearest difference is in-app purchases: Subterranean at none against Downfall Survival Sim's 1. Subterranean also leads on update cadence (every 2 days vs every 6 days) and iOS requirement (13.0 vs 15.0). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Downfall Survival Sim sells 1 one-off in-app purchase. Subterranean asks for nothing beyond the download.

UpkeepUpdate frequency

Subterranean ships an update every 2 days, Downfall Survival Sim every 6 days. The most recent releases landed on October 13, 2026 and October 17, 2026 respectively.

Scorecard3 real differences · 6 level
Subterranean versus Downfall Survival Sim: the parameters behind the verdict, then further details
ParameterSubterraneanDownfall Survival Sim
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 2 days — betterEvery 6 days
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size142 MB40 MB
Age rating4+9+
DeveloperTayin WallaceConstantin Catalin Stroescu

In-app purchases

None

Subterranean

No in-app purchases

1 purchases

Downfall Survival Sim

One-time1
  • Survivor Mode$9.99

Questions

Is Subterranean free?
Subterranean is free to download, with no in-app purchases.
Is Downfall Survival Sim free?
Downfall Survival Sim is free to download, with in-app purchases available.
Do Subterranean or Downfall Survival Sim have ads?
Neither Subterranean nor Downfall Survival Sim shows ads.
Which is updated more often, Subterranean or Downfall Survival Sim?
Subterranean ships an update every 2 days, and Downfall Survival Sim every 6 days. Most recently, Subterranean was updated on October 13, 2026 and Downfall Survival Sim on October 17, 2026.

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