Comparison

Omega Protocol vs The UnderGrowth

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

Head to head
About

Omega Protocol

An emergency AI tasked with reversing universal heat death and restarting the Big Bang. You must generate heat, build a cosmic factory, and use the remnants of past civilizations as fuel to power the Omega Engine.

Highlights
  • Reverse universal heat death
  • Restart the Big Bang
  • Generate initial heat
  • Build a cosmic factory
  • Dismantle past civilizations
  • Use memories as fuel
Features
Read full description

The universe has died. Entropy has won. You are "The Omega Protocol", an emergency artificial intelligence designed to reverse heat death and restart the Big Bang. Starting from absolute zero (0 Kelvin), you must generate the first unit of heat by violating thermodynamics, build a cosmic factory, dismantle the last vestiges of previous civilizations, and burn their memories as fuel to power the Omega Engine.

About

The UnderGrowth

Features
Read full description

Deep beneath the surface, a living network stirs. You are the cultivator — tap to grow, produce to expand, and unlock the hidden species of the underground. The UnderGrowth is an idle clicker built around the slow, satisfying rhythm of fungal growth. Tap to generate mycelium, watch your production tick upward, and make strategic choices about when to prestige and how to spend your hard-earned spores. GROW YOUR NETWORK Tap the screen to produce mycelium and build your underground operation. Upgrade your production rate and watch your numbers climb — even while you're away. UNLOCK RARE SPECIES Discover and collect a variety of unique underground species, each with its own look and lore. Watch your ecosystem come to life as your collection grows. PRESTIGE & EVOLVE When the time is right, reset your progress and carry forward bonus spores that make each run more powerful than the last. Every prestige brings new potential. BOOST YOUR OPERATION Earn temporary boosts through rewarded ads — double your production for an hour, multiply your tap power, or claim an instant burst of progress. For players who want a permanent edge, the Shop offers one-time upgrades that stay with you forever. BUILT FOR IDLE PLAY Your mycelium keeps growing whether you're actively tapping or not. Check back, collect your haul, and keep expanding. No energy timers. No pay-to-win walls. Just the quiet satisfaction of watching something grow.

Screenshots

Omega Protocol4 screens
The UnderGrowth4 screens

Verdict

The call

The clearest difference is in-app purchases: Omega Protocol at none against The UnderGrowth's 2. Omega Protocol also leads on ads (none vs shown). The UnderGrowth's advantage is update cadence (every 5 days vs every 2 weeks) and iOS requirement (13.0 vs 16.4). On price 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. The UnderGrowth sells 2 one-off in-app purchases. Omega Protocol asks for nothing beyond the download.

UpkeepUpdate frequency

Omega Protocol ships an update every 2 weeks, The UnderGrowth every 5 days. The most recent releases landed on October 23, 2026 and October 25, 2026 respectively.

Scorecard4 real differences · 6 level
Omega Protocol versus The UnderGrowth: the parameters behind the verdict, then further details
ParameterOmega ProtocolThe UnderGrowth
PriceFreeFree
Rating4.0 (8 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings8 — better—
Update frequencyEvery 2 weeksEvery 5 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.413.0 — better
Further details — not scored
Size43 MB26 MB
Age rating12+4+
DeveloperZona de FicciónEhren Davis

In-app purchases

None

Omega Protocol

No in-app purchases

2 purchases

The UnderGrowth

One-time2
  • 10× Click Power$0.99
  • 2× Production Boost$0.99

Questions

Is Omega Protocol free?
Omega Protocol is free to download, with no in-app purchases.
Is The UnderGrowth free?
The UnderGrowth is free to download, with in-app purchases available.
Do Omega Protocol or The UnderGrowth have ads?
The UnderGrowth shows ads; Omega Protocol does not.
Which is updated more often, Omega Protocol or The UnderGrowth?
Omega Protocol ships an update every 2 weeks, and The UnderGrowth every 5 days. Most recently, Omega Protocol was updated on October 23, 2026 and The UnderGrowth on October 25, 2026.

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