Comparison

Rootflux vs Reactor

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

Head to head
About

Rootflux

An idle growth game where you expand an underground root system. Gather nutrients, strengthen your network, and break through strata to build a deeper living system. Features include idle growth, visible expansion, and long-term systems like challenges and automation.

Highlights
  • Idle nutrient growth
  • Visible root network expansion
  • Transport, absorption, branching, and depth upgrades
  • Permanent growth through strata breakthroughs
  • Seedfall, challenges, and automation systems
  • Frequent updates with new content
Features
Read full description

Rootflux is an idle growth game about sending roots deeper underground. Grow new roots, gather nutrients, strengthen your transport network, break through strata, and gradually build a wider and deeper living system. Features: - Idle nutrient growth over time - A root network that visibly expands as you play - Upgrades for transport, absorption, branching, and depth - Permanent growth through strata breakthroughs - Longer-term systems including seedfall, challenges, and automation Rootflux will continue to grow through frequent updates with new systems, balance changes, and usability improvements.

About

Reactor

Features
Read full description

Twelve turret slots ring a glowing reactor Core. The swarm descends from three lanes — dead center and both flanks — so a lopsided ring gets punished. Drag two matching turrets together to merge them a tier higher, place them where their roles line up, and hold. Reactor: Core Siege is a merge tower-defense roguelite you actually play — no auto-battler doing the work, no timer holding your progress hostage. SKIP THE GRIND — NEVER THE RANK Most strategy games sell you power and call it fair. This one splits the two cleanly. Your own runs are yours to speed up however you like. But the Daily Descent is wallet-immune: every player gets the identical date-seeded board, it is 100% ad-free, and nothing you buy can touch it. Your result there is your merges, your placement, and your Overclock timing. Nothing else. Money can buy your time back. It can never buy your rank. New in 1.1: a daily Game Center leaderboard where everyone climbs that exact same board. THE LOOP Waves descend toward the Core. Merge turrets from tier 1 up to tier 6, mix the three roles — Striker, Support, Splash — around the ring, and slam Overclock, a burst cooldown, on the right beat. Between waves you draft one of three cards: a new turret, a relic, or a lane modifier. Clear, draft, push deeper. Run it at 1x, or flip to 2x when you know what you're doing. WHAT'S IN IT - 12 turret types across a T1-T6 merge ramp — rockets, plasma, lasers - 3 turret roles: Striker, Support, Splash - 10 relics that bend the rules - 6 lane-modifier cards - 8 enemy types, from Scuttlers to Void Elites - The Warden Core — a boss every 10 waves with three telegraphed attacks: Core Slam, Ring Sweep, Static Snare - A 30-node, two-track prestige tree — 10 session nodes plus 20 prestige nodes - An 8-rung ascension ladder, Warm-Up through Impervious - A daily Game Center leaderboard + achievements — the ranked, wallet-immune surface - A blueprint collection to complete - The date-seeded Daily Descent, with a streak worth protecting EVERY RUN CAN PLAY DIFFERENTLY The prestige tree doesn't just hand you bigger numbers. Most of the prestige track unlocks new turrets, new relics, and new lane modifiers that widen your draft pool — so a run weeks in draws from a deck your first run never saw. HONEST PRICING — NO SUBSCRIPTION The whole game is free, and there is no subscription. Optional rewarded ads speed up your own progress if you choose to watch one. Prefer none at all? Ad-Free Forever is $3.99 once and it's yours for good — not a rental. There's also a one-time Starter Pack ($0.99) and a Spark Pack ($4.99) if you'd rather skip ahead in your own sandbox. No loot boxes. No spin-to-win. No countdown bundles. And none of it reaches the Daily. PRIVATE AND OFFLINE Plays fully offline. No account, no sign-in, no server watching your runs. Your progress lives on your device. Merge the ring. Time the Overclock. See how deep you can hold. — Questions or feedback? Email dark2torch@gmail.com — we usually reply within a day or two. Privacy Policy: https://moathothman.github.io/ExploringIdeas-legal/coresiege/privacy.html Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Rootflux4 screens
Reactor4 screens

Verdict

The call

The clearest difference is update cadence: Rootflux at every 3 days against Reactor's every 2 weeks. Rootflux also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, ads and in-app purchases 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. Rootflux sells 3 one-off in-app purchases and Reactor sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Rootflux ships an update every 3 days, Reactor every 2 weeks. The most recent releases landed on November 10, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
Rootflux versus Reactor: the parameters behind the verdict, then further details
ParameterRootfluxReactor
PriceFreeFree
Rating4.5 (92 ratings) — better—
Positive reviews60.7% of reviews—
Number of ratings92 — better—
Update frequencyEvery 3 days — betterEvery 2 weeks
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better17.0
Further details — not scored
Size163 MB19 MB
Age rating4+9+
DeveloperIdle System, Inc.Moaath Othman

In-app purchases

3 purchases

Rootflux

One-time3
  • Ad-Free Pass$2.99
  • Dandelion$4.99
  • Spider$4.99
3 purchases

Reactor

One-time3
  • Starter Pack$0.99
  • Ad-Free Forever$3.99
  • Spark Pack$4.99

Questions

Is Rootflux free?
Rootflux is free to download, with in-app purchases available.
Is Reactor free?
Reactor is free to download, with in-app purchases available.
Do Rootflux or Reactor have ads?
Both Rootflux and Reactor show ads.
Which is updated more often, Rootflux or Reactor?
Rootflux ships an update every 3 days, and Reactor every 2 weeks. Most recently, Rootflux was updated on November 10, 2026 and Reactor on October 31, 2026.

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