# Reactor Defense — TD - Protect the Reactor > Deep tower-defense game with permanent progression and evolving turrets. (iPhone/iPad app by Treven Tilbury.) - Source: https://appshunter.io/ios/app/reactor-defense/id6816854660 (this page in markdown: same URL + `.md`) - Developer: [Treven Tilbury](https://appshunter.io/developer/6816854662) - Category: Games, Action, Strategy - Price: Free with in-app purchases - Rating: 5.00/5 from 6 App Store ratings · 1 written reviews indexed - Age rating: 12+ - Requires: iOS 15.0 · 11 MB - Languages: American English - Released: 2026-10-22 - Data updated: 2026-10-29 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/reactor-defense/id6816854660/reviews.md ## What is Reactor Defense? Rogue machines are crawling toward your reactor core. You have turrets, scrap, and a build that gets stronger every run. Hold the line. Reactor Defense is a deep tower-defense game about the build you grow over time. Every run earns Mastery XP that permanently unlocks new evolutions, awakenings and upgrades, so no two runs and no two players end up with the same defense. TWELVE TURRETS, TWELVE EVOLUTIONS Gunner, Cannon, Mortar, Cryo, Arc, Lance, Warp, Flak, Corrosion, plus the Amplifier, Booster and Salvager support turrets. Every turret can evolve into a specialist: Sniper, Missile, Tempest Coil, Saturation Battery, Singularity and more. Evolved turrets climb to level 20 and unlock an Awakening, a signature power that switches on at max level. Several evolutions fire powerful ultimates on a cooldown. MASTERY: A BUILD THAT CARRIES FORWARD Spend XP on permanent upgrades: per-turret damage, range and fire rate, starting scrap and core strength, bigger Field Kit capacity, and the Overclock License, which lifts your turret level cap. Your progress is saved automatically, run after run. THE TECH TREE: CHOOSE YOUR RUN Each run has its own run-wide tech tree. Junctions force a choice, and taking one side locks out the other, so every run is a new set of trade-offs. PLAY YOUR WAY Choose your targeting priority on every turret: First, Last, Closest or Strongest. Aim a max-level Lance along a fixed line and burn everything that walks the lane. Place power-up nodes like Damage, Range, Rapid, Bounty or Shielded to decide which turret earns the upgrade. A fixed Daily Challenge gives every player the same map, modifiers and enemy seed each day. Opt into harder Modifiers such as Glass Core, Blitz, Fog of War, Austerity and Overcrowded to raise your score multiplier. Trophies record lasting achievements and grant small permanent bonuses. AN ENEMY THAT FIGHTS BACK Flyers, armored brutes and bosses come at you, and some enemies disable or destroy your turrets. Core Instability events, mega-boss choices and power-up nodes keep you deciding under pressure. Use Field Kits, one-shot tools, to turn a bad wave around. BUILT TO RESPECT YOU Free to play, fully offline, and no pay-to-win. Ads are optional to watch for rewards, and a one-time purchase removes ads for good. No account or sign-in is required, and your progress saves automatically. Think fast. Build smart. Defend the reactor. ## Key features - Deep tower-defense gameplay - Permanent Mastery XP unlocks - Twelve turrets with evolutions - Dynamic run-wide tech tree - Customizable turret targeting - Daily challenges and modifiers - Offline play ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Remove Ads | $4.99 | one-time | ## Is Reactor Defense safe? Not enough ratings yet to assess Reactor Defense. ## Is Reactor Defense legit? Reactor Defense has limited verification signals. The AppsHunter Legitimacy Score for Reactor Defense is 58 out of 100 points across 7 verification signals from App Store and developer data. ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/reactor-defense/id6816854660/reviews.md ### 5/5 — Super fun! *2026-10-23* Great game design, easy to play, and keeps you engaged ## Frequently asked questions about Reactor Defense ### What is Reactor Defense? Reactor Defense is a deep tower-defense game where players defend a reactor core from incoming enemies. It features permanent progression systems and a variety of turrets with unique evolutions. ### Does Reactor Defense have ads? Yes, Reactor Defense contains advertisements. Players can opt to watch ads for rewards, and a one-time purchase is available to remove ads permanently. ### Can I play Reactor Defense offline? Yes, Reactor Defense is fully playable offline. No account or sign-in is required, and your progress saves automatically, making it convenient for on-the-go play. ### What are the permanent upgrades in Reactor Defense? Players earn Mastery XP from each run, which can be spent on permanent upgrades. These include increased per-turret damage, range, fire rate, starting scrap, core strength, and the ability to lift turret level caps. ### How many turrets are available in Reactor Defense? There are twelve distinct turrets in Reactor Defense, each with twelve possible evolutions. These evolutions allow turrets to specialize further and unlock powerful signature abilities at max level. ### Is Reactor Defense pay-to-win? No, Reactor Defense is designed to be free to play and not pay-to-win. While there are optional in-app purchases and ads for rewards, the core gameplay and progression are not dependent on spending money. ### What devices can I play Reactor Defense on? Reactor Defense is currently supported on iPhone and iPod devices. The game is rated for ages 12+. ### How often is Reactor Defense updated? Reactor Defense was last updated on October 22, 2026, with version 2.1. The release date was also October 22, 2026, suggesting recent development activity. ## Version history (last 1 release) ### 2.1 — 2026-10-22 No release notes. --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-29.*