Comparison

Mothership Idle Tower Defense vs Supernova

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

Head to head
About

Mothership Idle Tower Defense

Engage in a roguelike tower defense experience set in space. Collect unique upgrades and power-ups to customize your ships and advance through challenging enemy waves. Enjoy a minimalistic design with intuitive controls for a relaxing yet strategic gameplay session.

Highlights
  • 20+ unique ship upgrades
  • 40+ randomized power-ups
  • Collectible power gems
  • Simple, intuitive controls
  • Active developer support
  • Roguelike progression
Features
Read full description

Idle Roguelike Tower Defense! Crazy upgrades, intriguing progression, and endless variety. All wrapped up in a small minimalistic package! “At the heart of the universe the godlike entities guard secret knowledge, energies, and equipment. Enter into this galactic plane to loot and pillage in the name of power! Or, at least try to survive…” This is a combination of all your favourite game elements all wrapped up in a perfect little package. Idly manage your space colony as it wrecks havoc and earns you epic rewards. Advance your strategy by choosing synergistic power-ups that give you a competitive edge. All the while, advance through ever-more challenging waves of enemies that will put your skills to the test. Features: • 20+ unique upgrades for your ships that drastically alter their power and ability. • 40+ power-ups that are randomly offered throughout each session, making every battle unique! • Collectable power gems to equip on your ships, giving you further customization and advantages in combat. • Simple and intuitive controls don’t require any micromanagement, making every session a relaxing, good time. • An active developer and Discord channel that is taking feature requests and improving the game every month! (I would love to hear from you!) Upgrade your spaceships into epic death machines. Mix-and-match powerups to get TEH URN. All in a relaxing session now! Join Discord https://discord.com/invite/HuTCDKvV Follow Instagram @galapagos.games Email jason@galapagos.games Thanks to: Simon Hason @SHDGames, for the daily assist

About

Supernova

An idle space tycoon game where you fuse hydrogen to grow and detonate stars. Earn permanent power-ups with each supernova to accelerate future runs. Features offline progress and a visually evolving star.

Highlights
  • Fuse hydrogen to create and grow stars
  • Offline progress and production
  • Visually evolving star stages
  • Prestige system with supernova cinematics
  • Deep multiplier stacking and research upgrades
  • Daily missions and streaks
  • Fully offline gameplay
Read full description

Fuse hydrogen into a living star. Grow it. Then blow it up — on purpose. SUPERNOVA is a premium-feel idle game about running a cosmic forge. Tap to spark fusion, build 12 generators from Hydrogen Wisp to Singularity Seed, and watch your star physically evolve — protostar, blue giant, red supergiant — until it is ready to collapse. Detonating it is the point: every supernova grants Neutron Cores, permanent power that makes each new universe faster than the last. WHY YOU'LL STAY • Real progress while you're away — production continues offline (extend the cap up to 24 hours with research), and a welcome-back doubler greets your return • A star that actually changes — five visual stages, rendered live, no canned art • Prestige that feels like a finale — a hand-built supernova cinematic, then a stronger start • Numbers that get gloriously big — Million, Septillion, and far beyond • Milestones every few minutes early on, deep multiplier stacking later • Daily missions and streaks that respect your time • 20 research upgrades that shape every run FAIR BY DESIGN • No ads. None. • No energy bars, no forced waits, no progress walls • Fully offline — no account, no sign-in, no internet required • Nothing collected, nothing tracked • Optional purchases exist (time warps, photons, a one-time Supporter Pack), and the entire game is balanced to be completed without spending anything THE LOOP 1. Tap your star and let generators forge Stardust 2. Hit ownership milestones — each one doubles a generator's output 3. Buy research, stack a Photon Surge boost, fill your Piggy Bank 4. Reach collapse readiness... and go SUPERNOVA 5. Keep your Neutron Cores forever. Start again, faster. Built by a solo developer in SwiftUI and SpriteKit. Every pixel is procedural — no asset packs, no stock art. Dark theme, tuned haptics, Reduce Motion respected. Your first universe is waiting. It starts with one atom.

Screenshots

Mothership Idle Tower Defense4 screens
Supernova4 screens

Verdict

The call

The clearest difference is ads: Supernova at none against Mothership Idle Tower Defense's shown. Supernova also leads on update cadence (every 2 days vs every 9 days) and ratings volume (80 vs 4). Mothership Idle Tower Defense's advantage is review sentiment (100% vs 76%) and rating (4.8 vs 4.5). On price, in-app purchases and monetization model 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. Mothership Idle Tower Defense sells 7 one-off in-app purchases and Supernova sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Mothership Idle Tower Defense holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: Supernova has 80 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 100% of Mothership Idle Tower Defense's written reviews are positive against 76% of Supernova's.

UpkeepUpdate frequency

Mothership Idle Tower Defense ships an update every 9 days, Supernova every 2 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

Scorecard7 real differences · 3 level
Mothership Idle Tower Defense versus Supernova: the parameters behind the verdict, then further details
ParameterMothership Idle Tower DefenseSupernova
PriceFreeFree
Rating4.8 (4 ratings) — better4.5 (80 ratings)
Positive reviews100.0% of reviews — better76.3% of reviews
Number of ratings480 — better
Update frequencyEvery 9 daysEvery 2 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, Mac, Apple TV, Vision Pro — better
Requires iOS12.0 — better17.0
Further details — not scored
Size146 MB15 MB
Age rating4+4+
DeveloperBern Games Inc.HUGO ANATOLE PAUL MORICEAU

Customer experience

Mothership Idle Tower Defense

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Supernova

All ratings79 ratings
Positive89.9%
Neutral1.3%
Negative8.9%
Written reviews38 reviews
Positive76.3%
Neutral7.9%
Negative15.8%

In-app purchases

7 purchases

Mothership Idle Tower Defense

One-time7
  • No More Ads$3.99
  • 200 Polyhedrons$4.99
  • 400 Polyhedrons$6.99
Show 4 more
  • Mothership Pack$8.99
  • 800 Polyhedrons$13.99
  • Squadron Pack$17.99
  • 2000 Polyhedrons$29.99
10 purchases

Supernova

One-time10
  • 50 Photons$0.99
  • Time Warp: 4 Hours$1.99
  • Break the Piggy Bank$2.99
Show 7 more
  • Automation Core$3.99
  • Supporter Pack$4.99
  • Time Warp: 24 Hours$4.99
  • 300 Photons$4.99
  • 700 Photons$9.99
  • Time Warp: 7 Days$14.99
  • 1600 Photons$19.99

Questions

Is Mothership Idle Tower Defense free?
Mothership Idle Tower Defense is free to download, with in-app purchases available.
Is Supernova free?
Supernova is free to download, with in-app purchases available.
Which has better reviews, Mothership Idle Tower Defense or Supernova?
Mothership Idle Tower Defense is rated higher. Mothership Idle Tower Defense averages 4.8 out of 5 from 4 ratings, while Supernova averages 4.5 from 80 ratings.
Do Mothership Idle Tower Defense or Supernova have ads?
Mothership Idle Tower Defense shows ads; Supernova does not.
Which is updated more often, Mothership Idle Tower Defense or Supernova?
Mothership Idle Tower Defense ships an update every 9 days, and Supernova every 2 days. Most recently, Mothership Idle Tower Defense was updated on November 3, 2026 and Supernova on November 5, 2026.

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