Comparison

Voltline 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

Voltline

Features
Read full description

Build a neon defense that works together. Place six tower types, combine their strengths, and adapt as enemy waves push through the grid. Try five campaign levels free, then unlock the full campaign with one purchase. FAIR PRICING Try the first 5 levels free. One single purchase unlocks all 30 levels, boss fights, and every future update — forever. No subscriptions, no consumables, no ads. Roguelite, survival, and weekly challenges are free for everyone. Core gameplay runs fully offline; a connection is only needed for the one-time purchase, Game Center, and iCloud sync. 30 CAMPAIGN LEVELS x 3 DIFFICULTIES Battle through 30 handcrafted levels across 3 acts. Play on Normal, Hard, or Insane - each difficulty scales enemy HP, speed, and your starting economy. Earn up to 3 stars per level and accumulate Voltage to unlock tower tiers, abilities, modes, and color schemes. Every level is hand-designed with unique grid layouts, enemy compositions, and strategic chokepoints. EPIC BOSS ENCOUNTERS Face the boss on late-game levels as it cycles through vulnerable and shielded phases - the same relentless standoff every time, demanding sharp timing and the right tower placement to break through. One wrong move and the grid falls. ROGUELITE, SURVIVAL & DAILY CHALLENGES Start a roguelite run with EMP and one random tower, then draft your next tower every 3 waves from a curated selection of three choices. Every 5 waves the map rotates and a modifier shakes up your approach, so no two runs play the same. Endless survival mode tests your endurance against infinite escalating waves. Daily and weekly challenges set the same fixed level, difficulty, and modifier for everyone - compete on Game Center leaderboards. TOWER SYNERGIES & ACTIVE ABILITIES Six tower types - Laser, EMP, Firewall, Tracer, Grid, Pulse - each with 3 upgrade tiers and branching specializations. Pair adjacent towers to trigger five synergies: Cryo-Burn, Ionized Grid, Suppression Field, Overcharged Lattice, and Kinetic Relay. Command the battlefield with deployable abilities that charge as you fight: Slow Field slows every enemy on the grid for a few seconds, buying you time to reposition and chain your towers' synergies. BUILT FOR ACCESSIBILITY Colorblind mode adds geometric symbols on every tower and pattern-fill HP bars, not just color. Reduced Motion simplifies animations, and a Flashing Effects toggle turns off strobing and flash-based effects for photosensitivity. Larger Text offers three text sizes, up to 1.5x standard. VoiceOver support covers menus, HUD, and tower panels, plus a board overlay that reads out every grid cell so you can place and select towers by touch.

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

Voltline4 screens
Void_TD4 screens

Verdict

The call

The clearest difference is in-app purchases: Void_TD at none against Voltline's 1. Void_TD also leads on iOS requirement (12.0 vs 17.0). On price, update cadence, ads 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. Voltline sells 1 one-off in-app purchase. Void_TD asks for nothing beyond the download.

UpkeepUpdate frequency

Voltline ships an update every 4 weeks, Void_TD fortnightly. The most recent releases landed on October 13, 2026 and October 2, 2026 respectively.

Scorecard2 real differences · 8 level
Voltline versus Void_TD: the parameters behind the verdict, then further details
ParameterVoltlineVoid_TD
PriceFreeFree
Rating—4.5 (14 ratings) — better
Positive reviews—80.0% of reviews
Number of ratings—14 — better
Update frequencyEvery 4 weeksFortnightly — better
AdsNoNo
In-app purchasesYesNo — better
Monetization—Free
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.012.0 — better
Further details — not scored
Size13 MB93 MB
Age rating9+9+
DeveloperOlof PettersonRyan O'Donnell

In-app purchases

1 purchases

Voltline

One-time1
  • Voltline PRO$2.99
None

Void_TD

No in-app purchases

Questions

Is Voltline free?
Voltline 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 Voltline or Void_TD have ads?
Neither Voltline nor Void_TD shows ads.
Which is updated more often, Voltline or Void_TD?
Voltline ships an update every 4 weeks, and Void_TD fortnightly. Most recently, Voltline was updated on October 13, 2026 and Void_TD on October 2, 2026.

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