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Tower placement
Place angular defense towers on buildable grid cells along enemy paths. Read ranges and coverage before each wave.
Now available on the App Store · 1.1
x3r0TD
Native iPhone tower defense on a neon tactical grid — Research, Evolution, Wardrobe, fair progression, offline play. Place towers. Research the grid. Hold the line through 100 sectors.
App StoreOfflineFair progression
Gameplay overview
Read the grid. Answer the wave.
Tower defense built for quick reads: placement, upgrades, specialization, and fusion — each layer adds tactical depth without clutter.
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Waves
Enemies follow fixed routes through the sector. Preview wave composition, adapt between waves, and earn in-level energy for placements.
↑
Upgrades
Spend in-battle energy on tier upgrades during a sector. Earn Cores from play to fund permanent upgrade tracks.
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Specialization
At tier 3, each of the six tower families splits into two specialization branches — choose a tactical identity per family.
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Fusion
From sector 21, combine two eligible towers into cross-family fusion constructs with distinct mechanics.
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Campaign progression
100 sectors across 10 chapters with star ratings, replay rewards, Codex entries, and achievements.
1.1 systems
Research, Evolution, Wardrobe, rankings
Meta progression beyond the battlefield — permanent Research, Evolution with Flux, Wardrobe cosmetics, and optional Game Center rankings.
R
Research Lab
Spend Research Points on a permanent tech tree. Progress is local and capped. Optional consumable Research purchases can grant Research Points or a Research Reset toward the same lab.
E
Tower Evolution
Evolve towers with Flux and mastery. Mastery requirements still apply after optional Flux purchases. Flux packs are fixed-content, with a shared weekly purchase limit.
W
Wardrobe
Browse owned cosmetics in Wardrobe. Cosmetics do not change gameplay. Optional cosmetic purchases are not currently shown in the Store; some cosmetics are earned through play.
G
Game Center rankings
Optional Online Rankings through Apple Game Center. No x3r0soft account is required. Rankings are separate from local campaign progress.
Signature mechanic
Tower fusion
From sector 21 onward, eligible towers on adjacent cells merge into cross-family constructs — 15 recipes total, each with its own damage profile and role.
- Unlock fusion at sector 21 in the campaign.
- Place two compatible towers from different families on merge-eligible cells.
- Commit a fusion to replace them with a single specialized construct.
- Discover recipes through play — the Codex tracks what you have found.
- Recipes pair families such as Pulse, Rail, Venom, Hex, Gel, and Arc — without spoiling every combination here.
Campaign
100 sectors. Rising pressure.
Ten chapters from Perimeter through Zero Core. Difficulty escalates through enemy composition and map geometry — not hidden stat walls.
10
Chapter arc
10 themed chapters with distinct environmental language and escalating tactical demands.
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Boss encounters
Ten chapter boss fights punctuate the campaign — each demands a different answer than standard waves.
23
Enemy roster
Twenty-three enemy archetypes including shields, runners, swarms, and mechanic carriers — readable at a glance via signal colors.
Also included
Endless mode (procedural waves) and Daily challenge (one seeded sector per day, unlocks after sector 3) extend play beyond the campaign.
Fair monetization
Optional purchases, honest design
Purchases save time within shared caps — not to block campaign progress. Wording here describes product intent, not a legal warranty.
- No ads in the game
- No loot boxes or energy timers
- No account required — progress saved locally on your device
- Optional consumable purchases (Cores, Research, Flux, Research Reset) with fixed contents
- Optional VIP Vanguard and Commander monthly subscriptions — convenience and disclosed modifiers, not exclusive combat power
- Optional cosmetic purchases are deferred from the Store until cosmetics apply in-game
- Campaign sectors are designed to be completable without purchasing
VIP
VIP Vanguard and Commander are optional monthly subscriptions. Exact benefits, odds, and cancellation paths are shown in the App under VIP and Apple's subscription management.
Technical highlights
Built for iPhone
Native frameworks, offline-first structure, and performance tiers that respect older devices.
Native iPhone
Built with SwiftUI, SpriteKit, and SwiftData — not a port. iPhone only, iOS 26.5 or later.
Readable performance
Combat is tuned for clarity under pressure with adaptive visual effects tiers and a 60fps readability target on supported devices.
Offline play
Single-player campaign, Endless, and Daily modes run without a network connection. Game Center rankings and App Store purchases need connectivity when you use them.
FAQ
Common questions
Answers reflect x3r0TD 1.1, now available on the App Store.
Which devices are supported?
x3r0TD is built for iPhone and requires iOS 26.5 or later. It is not designed for iPad, Mac, or Android in the current release.
Does the game require an account?
No. Progress, settings, and purchase records are stored locally on your device using SwiftData and UserDefaults. There is no x3r0soft login. Optional Game Center rankings use your Apple Game Center identity when you opt in.
Can I play offline?
Yes. The campaign, Endless mode, and Daily challenge are playable offline. An internet connection is needed for App Store purchases, restore flows, VIP verification when online, and optional Game Center rankings.
Are purchases required?
No. The Store offers optional consumable purchases and optional VIP Vanguard and Commander subscriptions. They can accelerate meta progression toward the same caps free play can reach. Campaign sectors are designed to remain beatable without purchases. Optional cosmetic purchases are not currently shown in the Store.
What does VIP include?
VIP Vanguard and Commander are optional monthly auto-renewable subscriptions. Exact benefits, disclosed odds, and cancellation paths are shown in the App under VIP and in your Apple ID subscription settings. VIP does not grant exclusive combat power or higher upgrade ceilings than free play.
How do I restore purchases?
Use Store → Restore Purchases or Settings → Restore Purchases while signed into the Apple ID used for the purchase. Optional consumable purchases follow standard App Store policy and do not restore after reinstall — disclosed in the Store UI. Subscriptions and other restorable entitlements sync via Restore when Apple reports them.
How do I contact support?
Email support@x3r0soft.com or visit the support page. Include your device model, iOS version, and sector number for gameplay issues.
Support & legal
Need help?
Support, privacy, terms, and contact — all one tap away.