Comparison

Siberium vs Annulus

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

Head to head
About

Siberium

Engage in an anime-style Idle RPG with strategic team-building and diverse gameplay modes. Collect and cultivate heroes from six factions, equip them with powerful gear, and unlock unique skills to defeat the King of Chaos. Enjoy endless fun with seasonal activities and guild exploration.

Highlights
  • Idle RPG gameplay
  • Hero collection and cultivation
  • Strategic team-building
  • Diverse game modes (Dungeons, Arena, Guild)
  • Seasonal and festival activities
  • Six hero factions
Features
Read full description

Anime game in the genre of Idle RPG with different modes and tactical diversity to achieve victory! 2D anime style of heroes and enemies will not leave anyone indifferent. Collect a variety of heroes to form unique team, cultivate your heroes and transform them into stronger heroes. =====Features===== ■ Endless fun ■ The Garden, Hero Quests, Tavern, Dungeons and the most important one, Hero Evolution! Holy Tree Trial, Arena, and also the Guild! There's a lot to do with the seasonal activities and special festival activities, you will never get bored. ■ Strategic Gameplay ■ Choose heroes from six factions, then equip cool equipments with high standards. Use runes to unlock hundreds of rare skills and heroes' hidden attributes. Come up with the best strategy to win battles. ■ Massive Collection ■ Six different factions, including Undead, Forest, Fortress, Dark, Chaos and Light. Collect extraordinary heroes from different factions as many as you can then build your exclusive line-ups! ■ Free Bonuses ■ Send hero teams to complete the tasks and claim free bonuses! Simply assign all heroes and you can get all the rewards. You can play anytime also anyplace without being interrupted by phone calls. ■ Powerful Guild ■ Join the guild and explore the magic world with members. Learn more as you can about strategies, fight for the highest glory and win precious trophies together! A great representative of Idle RPG will not leave you bored with many bonuses for new and old players! Start today and get 100 spins for FREE! Project Team «Siberium» in Europe and America

About

Annulus

Lead a mercenary legion in a dark fantasy world, collecting and training units. Engage in tactical battles across a turbulent continent for survival and glory. Features stunning Unreal Engine visuals and deep strategic gameplay.

Highlights
  • Mercenary collection and training
  • Tactical combat
  • Dark fantasy setting
  • Unreal Engine visuals
  • Legion building
  • Resource management
Features
Read full description

Annulus is a unique dark fantasy tactical game, inspired by medieval knightly warfare. Blending dark fantasy elements with an epic, grand-scale worldbuilding approach—and powered by the stunning visual capabilities of Unreal—it delivers a breathtaking visual experience. In the game, you take on the role of a mercenary captain, collecting and training mercenaries, weapons, and various resources, each with their own unique traits. Build your own mercenary legion and battle across the turbulent continent of Novisess—for survival, for glory, and to break free from the fate imposed by the world’s rules. the battle is endless! Annulus Subscription and Auto-Renewal Service Agreement 1. Subscription Pricing and Duration Weekly Card: 7-day subscription for $0.99. Monthly Card: 30-day subscription for $2.99. Quarterly Card: 180-day subscription for $14.99. 2. Subscription Benefits Daily perks during the subscription period include: Supplies daily quick-purchase limit +2. Supplies recovery speed +10%. Single-round backtrack limit +2. Dispatch march speed +10%. Additional perks for continuous subscriptions: 60 consecutive days: Supplies storage limit +10. 90 consecutive days: Mercenary roster limit +100. 120 consecutive days: Collection free exchange cooldown -10%. 150 consecutive days: Arena Honor gain +10%. 180 consecutive days: Intelligence Camp daily completable tasks +1. 3. Auto-Renewal Subscriptions via Apple App Store are auto-renewed by default. Payment will be charged to the user’s iTunes Account upon confirmation, and the subscription will automatically renew within 24 hours before the end of the current period unless auto-renewal is turned off at least 24 hours prior. Users must manually disable auto-renewal in iTunes/Apple ID Settings. 4. Terms of Service https://privacy.nirvana.game/com.nirvana.game/privacy-policy-en.html 5. Privacy Policy https://privacy.nirvana.game/com.nirvana.game/terms-of-service-en.html 6. How to Cancel Subscription To cancel, go to your iOS device’s: Settings → iTunes Store & App Store → Tap Apple ID → Select View Apple ID → Subscriptions → Manage. Locate the Annulus subscription and cancel it.

Screenshots

Siberium4 screens
Annulus4 screens

Verdict

The call

The clearest difference is monetization model: Siberium at free with in-app purchases against Annulus's subscription. Siberium also leads on review sentiment (50% vs 28%) and rating (3.0 vs 2.8). Annulus's advantage is ads (none vs shown) and update cadence (every 5 days vs every 6 weeks). On price, in-app purchases 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. Siberium sells 17 one-off in-app purchases and Annulus sells 9 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Siberium holds the better App Store score, 3.0 against 2.8. That said, the two scores are not equally well evidenced: Annulus has 23 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 50% of Siberium's written reviews are positive against 28% of Annulus's.

UpkeepUpdate frequency

Siberium ships an update every 6 weeks, Annulus every 5 days. The most recent releases landed on September 26, 2026 and September 4, 2026 respectively.

Scorecard7 real differences · 3 level
Siberium versus Annulus: the parameters behind the verdict, then further details
ParameterSiberiumAnnulus
PriceFreeFree
Rating3.0 (4 ratings) — better2.8 (23 ratings)
Positive reviews50.0% of reviews — better28.2% of reviews
Number of ratings423 — better
Update frequencyEvery 6 weeksEvery 5 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.012.0 — better
Further details — not scored
Size11 MB3.6 GB
Age rating12+12+
DeveloperINFIPLAY LIMITEDHONGKONG NIRVANA LIMITED

Customer experience

Siberium

All ratings4 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Annulus

All ratings23 ratings
Positive39.1%
Neutral13.0%
Negative47.8%
Written reviews39 reviews
Positive28.2%
Neutral15.4%
Negative56.4%

In-app purchases

17 purchases

Siberium

One-time17
  • Purchase 0.99$0.99
  • Purchase 1.99$1.99
  • Purchase 2.99$2.99
Show 14 more
  • Purchase 4.99$4.99
  • Purchase 7.99$7.99
  • Purchase 8.99$8.99
  • Purchase 9.99$9.99
  • Purchase 14.99$14.99
  • Purchase 15.99$15.99
  • Purchase 17.99$17.99
  • Purchase 19.99$19.99
  • Purchase 25.99$25.99
  • Purchase 27.99$27.99
  • Purchase 29.99$29.99
  • Purchase 49.99$49.99
  • Purchase 69.99$69.99
  • Purchase 99.99$99.99
9 purchases

Annulus

Subscriptions3
  • Admiration Offering Pact$0.997 Days
  • Offering Pact$2.991 Month
  • Devotion Offering Pact$14.996 Months
One-time6
  • Scaled Fossil 6$0.99
  • Scaled Fossil x30$4.99
  • Scaled Fossil x98$14.99
Show 3 more
  • Scaled Fossil x198$29.99
  • Scaled Fossil x328$49.99
  • Scaled Fossil x648$99.99

Questions

Is Siberium free?
Siberium is free to download, with in-app purchases available.
Is Annulus free?
Annulus is free to download, with in-app purchases available.
Which has better reviews, Siberium or Annulus?
Siberium is rated higher. Siberium averages 3.0 out of 5 from 4 ratings, while Annulus averages 2.8 from 23 ratings.
Do Siberium or Annulus have ads?
Siberium shows ads; Annulus does not.
Which is updated more often, Siberium or Annulus?
Siberium ships an update every 6 weeks, and Annulus every 5 days. Most recently, Siberium was updated on September 26, 2026 and Annulus on September 4, 2026.

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