MDS vs Void_TD
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
MDS
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Something strange is happening. Cities are being taken over by waves of identical vehicles. But who or what is driving these vehicles? And in such precise formation? Several cities have already fallen. They are now creating vehicles too and in more varieties. These waves need to be stopped. This is a tough tower defense game. Can you make the right strategic choices? • Wide variety of enemies, weapon types and maps • Each gun has its own targeting mode: Nearest, Fastest, Slowest, Closest to the End etc. • Buy the map chapters, once and play them for life • Choose your commander to boost your defenses and unlock greater power as you progress. Strategy: You have many decisions to make, choose well and you will win. For example: • Where should you deploy your guns? • Which types of guns should you use? • What targeting mode should you choose? • Which booster bonus should you choose? More gems per kill, instant gems, cheaper upgrades? Aim of the game: Destroy the enemy vehicles before they reach the end of the map. Keep at it until all the waves of enemies are finished. If you can reach the end with lives to spare then you have completed the map/level. Level and map are used interchangeably, they mean the same thing. Simply surviving is not enough for a good score. How to play: Choose which weapon type to place and of course where to place it. Then simply drag and drop it into position. Tap on any placed weapon to upgrade, change its targeting mode or to sell it. Commanders: Commanders provide passive abilities and a special strike ability. Passive abilities are always active. They provide permanent bonuses, such as increased weapon damage, rate of fire, range, and other stats. The Special Strike ability is a powerful, targeted action that you activate manually. After use, it enters a cooldown before it can be used again. • The base cooldown is 10 minutes • Cooldown time can be reduced through upgrades To use a Special Strike: 1. When ready, the commander’s image is replaced by a target icon 2. Click the target icon 3. Drag it to the area you want to strike 4. Release to activate the ability You need 'Points' to upgrade your commander’s abilities. All commanders start with 10 Points when you first launch the game. You can earn more 'Points' by completing levels and receiving 'Star' ratings based on your performance Each 'Star' you earn gives you 1 Point. There are currently 9 commanders available (3 for each chapter) Each commander has different passive abilities and Special Strike options, allowing for different play-styles. General: Each map will provide different challenges as the set path enemies follow will change. Vehicles do not block each other. This makes for a more challenging game. Maps/levels are grouped into chapters. Buy the map chapters once and play the purchased maps for life. No other purchases are required to play and beat the game. Some guns are restricted to higher map/level but as soon as you successfully complete the required map/level, the gun will be available for subsequent levels. No purchase is required to unlock any gun. Chapter 3 has gun upgrades that are not available in chapter 1 and 2. There are 3 separate map chapters available for purchase. GambitAx Gems GambitAx Gems can be used to purchase or upgrade weapons. When spending gems, the game will use normal gems first, and then GambitAx Gems to cover any remaining cost. Buying GambitAx Gems isn’t required. You can beat the game without purchasing any. Awards: Gain awards by reaching the relevant threshold in a category. There are several award categories. New awards are given at the end of the level. Disclaimer: All in-game items and GambitAx Gems (premium currency) are purely virtual and hold no real-world value. They cannot be exchanged, transferred, or redeemed for cash or other real-world goods. Refunds are handled according to Apple’s policies.
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.
Screenshots
Verdict
The clearest difference is in-app purchases: Void_TD at none against MDS's 7. Void_TD also leads on update cadence (fortnightly vs monthly) and device support (3 vs 1). On price and ads 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. MDS sells 7 one-off in-app purchases. Void_TD asks for nothing beyond the download.
MDS ships an update monthly, Void_TD fortnightly. The most recent releases landed on October 9, 2026 and October 2, 2026 respectively.
| Parameter | MDS | Void_TD |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.5 (14 ratings) — better |
| Positive reviews | — | 80.0% of reviews |
| Number of ratings | — | 14 — better |
| Update frequency | Monthly | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 26.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 171 MB | 93 MB |
| Age rating | 12+ | 9+ |
| Developer | Bruce Mattison | Ryan O'Donnell |
In-app purchases
MDS
- 100 GambitAx Gems$0.99
- Hard and Insane Difficulties$0.99
- Chapter 3 Maps$1.99
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- 300 GambitAx Gems$1.99
- Chapter 1 Maps$2.99
- Chapter 2 Maps$2.99
- Play Maps in Any Order$3.99
Void_TD
No in-app purchases









