Comparison

AI Defense vs Void_TD

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

Head to head
About

AI Defense

Features
Read full description

This is a sci-fi idle tower defense game unlike anything you’ve ever seen! AI machines have launched a counterattack against humanity, pushing mankind to the brink of extinction. With every last resource, humans built the strongest fortress ever created. You have been appointed as the final commander of humanity inside the fortress. Build and command powerful mechs, fight back against the invading machine legion, and reclaim the homeland humanity once lost. Upgrade and promote every turret in your defensive fortress to attack the endless waves of mechanical enemies and stop them from breaching the city. Summon heroes from all fronts, send them beyond the walls to fight the enemy, choose the right skill combinations, and strike at the perfect moment to deliver a decisive blow. As the commander, you will engage in a battle of power and strategy against alien machines on this blue planet. Commander, lead humanity and take back our home! Game Features: 1. Exciting controls: unleash unstoppable power with just your fingertips. 2. Easy idle gameplay: earn plenty of rewards even while offline. 3. Stunning visuals: enjoy an immersive sci-fi cinematic experience. 4. Build your fortress and create an unbreakable defense. 5. Collect and upgrade mech heroes, then unleash full firepower in intelligent combat. 6. Mix and match skills freely. It’s time to show your tactical genius. 7. Multiple battlefield environments, including glaciers, deserts, and forests. Ever-changing battlefields await your challenge! Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Void_TD

Defend your base against waves of enemies in this sci-fi tower defense game. Strategically place and upgrade towers, customize your loadout, and face increasingly difficult challenges. Unlock new modes and cosmetic options as you progress.

Highlights
  • 6 unique tower types with 3 upgrade levels
  • 6 enemy types including boss variants
  • 20 campaign waves and procedural endless mode
  • Customizable tower loadouts and cosmetic skins
  • 3 difficulty levels
  • High score tracking
Features
Read full description

Void_TD is a sci-fi tower defense game where you defend your base against waves of void-spawned enemies. Place towers on the grid, upgrade your defenses, and outlast 20 increasingly dangerous waves — culminating in a showdown with THE VOID, the ultimate boss. TOWERS Choose from 6 unique tower types and build your perfect loadout: - Laser Turret — fast-firing single-target beam - Plasma Cannon — area-of-effect splash damage - Void-Seeker — long-range precision strikes - Titan Mech — devastating heavy splash damage - Void Stunner — slows groups of enemies and weakens bosses - Tesla Tower — electric AoE with burn and stun upgrades Upgrade each tower up to level 3 for increased damage and range. Sell towers mid-wave to adapt your strategy on the fly. ENEMIES Face off against 6 enemy types, each with distinct abilities: - Scouts and Shades test your reaction speed - Tankers and Sentinels absorb punishment with raw HP and periodic shields - Heralds stun your towers as they pass - THE VOID enters with heavy armor that must be broken before you can finish it off Enemy strength scales with each wave — no two runs feel the same. THREE DIFFICULTY LEVELS - Normal — learn the ropes and master your strategy - Hard — 1.5x enemy HP, unlocked after beating the campaign - Insane — 2.5x HP and faster enemies, for those who want a real challenge ENDLESS MODE Beat the campaign to unlock Endless Mode, where waves are procedurally generated with exponential scaling. There is no final wave — just you, your towers, and the void. Compete against your own high score. CUSTOMIZE YOUR LOADOUT Equip up to 5 towers before each run. Earn coins from victories to unlock the Tesla Tower, buy cosmetic skins, and customize your towers with 9 color tints. Redeem codes for exclusive rewards. FEATURES - 20 hand-crafted campaign waves plus procedural endless mode - 6 tower types with 3 upgrade levels each - 6 enemy types including 2 boss variants - Tower loadout and cosmetic customization - Base upgrades for damage reduction - High score tracking - Haptic feedback - No ads. No pay-to-win. Just tower defense.

Screenshots

AI Defense4 screens
Void_TD4 screens

Verdict

The call

The clearest difference is in-app purchases: Void_TD at none against AI Defense's 10. Void_TD also leads on ads (none vs shown) and iOS requirement (12.0 vs 15.0). On price, update cadence 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. AI Defense sells 6 in-app purchases, starting at $9.99 per 7 days. Void_TD asks for nothing beyond the download.

UpkeepUpdate frequency

AI Defense ships an update every 2 weeks, Void_TD fortnightly. The most recent releases landed on September 10, 2026 and October 19, 2026 respectively.

Scorecard3 real differences · 7 level
AI Defense versus Void_TD: the parameters behind the verdict, then further details
ParameterAI DefenseVoid_TD
PriceFreeFree
Rating—4.5 (14 ratings) — better
Positive reviews—80.0% of reviews
Number of ratings—14 — better
Update frequencyEvery 2 weeksFortnightly — better
AdsYesNo — better
In-app purchasesYesNo — better
Monetization—Free
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.012.0 — better
Further details — not scored
Size314 MB93 MB
Age rating9+9+
DeveloperiDeactionRyan O'Donnell

In-app purchases

6 purchases

AI Defense

Subscriptions1
  • Unlimited Ads Ticket$9.997 Days
One-time5
  • Clearance reward pack$9.99
  • Battle Pass$9.99
  • Clearance reward pack$19.99
Show 2 more
  • Clearance reward pack$49.99
  • Clearance reward pack5 variants$99.99
None

Void_TD

No in-app purchases

Questions

Is AI Defense free?
AI Defense is free to download, with in-app purchases available.
Is Void_TD free?
Void_TD is free to download, with no in-app purchases.
Do AI Defense or Void_TD have ads?
AI Defense shows ads; Void_TD does not.
Which is updated more often, AI Defense or Void_TD?
AI Defense ships an update every 2 weeks, and Void_TD fortnightly. Most recently, AI Defense was updated on September 10, 2026 and Void_TD on October 19, 2026.

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