Void_TD vs Retro TD
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
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.
- 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
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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.
Retro TD
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Build mazes. Watch creeps puzzle through. Hold the line. Retro TD is a hexagonal-arrow tower defense game. Place towers along the path, upgrade between waves, and survive against creeps that follow the arrows you've drawn. Tight, decision-heavy play — no filler, no grind. AI-GENERATED LEVELS Describe a shape — spiral, figure-8, knot, hourglass, twin loop — and the game generates a new level matching it. Each generation uses one credit; the Starter Pack includes 4, and you can top up when you want more. WHAT'S INSIDE • 30 hand-designed campaign levels, from gentle tutorial to boss-tier • Four tower types with directional aim-lock • A radial build menu that keeps your finger out of the action • Game Center high-wave leaderboards on every level • Reduced Motion option in Settings • Portrait, single-handed play IN-APP PURCHASES • Starter Pack ($2.99): unlocks levels 11–30 and includes 4 AI level credits • Credits 4-Pack ($1.99): four additional AI level credits SHARING Custom levels can be shared with friends by tapping an import link. Levels are filtered for objectionable content; long-press any received level to report it. No ads. No tracking. No account required.
Screenshots
Verdict
The clearest difference is in-app purchases: Void_TD at none against Retro TD's 2. Void_TD also leads on iOS requirement (12.0 vs 17.0). Retro TD's advantage is update cadence (every 3 days vs fortnightly). On price, 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
Both are free to download. Retro TD sells 2 one-off in-app purchases. Void_TD asks for nothing beyond the download.
Void_TD ships an update fortnightly, Retro TD every 3 days. The most recent releases landed on October 2, 2026 and October 7, 2026 respectively.
| Parameter | Void_TD | Retro TD |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (14 ratings) — better | — |
| Positive reviews | 80.0% of reviews | — |
| Number of ratings | 14 — better | — |
| Update frequency | Fortnightly | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 93 MB | 11 MB |
| Age rating | 9+ | 9+ |
| Developer | Ryan O'Donnell | Doug Barrett |
In-app purchases
Void_TD
No in-app purchases
Retro TD
- 4 AI Level Credits$1.99
- Starter Pack$2.99









