neoDefense vs STEM Defense
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
neoDefense
Defend a sprout of new life from invading creeps by building and upgrading your fortress. Strategize with various weapons to overcome challenging missions and defeat powerful bosses. Enjoy mind-boggling graphics and thrilling sound effects in this unique tower defense experience.
- Build and upgrade fortress
- Over 2,500 enemy waves
- 99 challenging missions
- 5 upgradable weapons
- Boss battles
- Stunning vector graphics
- Thrilling sound effects
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DEFEND YOUR SPROUT OF NEW LIFE FROM INVADER! [Build, Upgrade and Sweep!] neoDefense is a defense game set in a core of new life invaded by countless creeps. A game that is a new twist of tower defense games, something that will keep you hooked and intriguingly challenged! YOU ARE UNDER ATTACK Build your fortress any way you wish, upgrade weapons and let the invasions begin! And sweep them! Don’t go over yourself & think that you can always win – strategize! MAKE SMART DECISIONS This game need your brilliant idea to defeat enemies attack! Each mission has its own mind-challenging hardness, show that your enemies can never outsmart you. Use weapons, plan and destroy the invaders. MIND-BOGGLING GRAPHICS & SOUNDS Enjoy stunning vector graphics accompanied with thrilling sound effects & animations. Be prepared for astounding visual heaven. One of the best you’ll see in a defense game. [neoDefense FEATURES] • Build your own fortress for incoming waves of enemies! • More than 2,500 waves of creeps across 99 missions (And will be added more later!) • 5 upgradable weapons to kill the creeps with style (And will be added more later!) • There is a BOSS at the end of each group of missions (It's too hard to beat!) • Amazing soundtrack in each group of missions • Astounding variation of the classic defense games [IN-APP PURCHASES] Each in-app purchase can make you challenge more missions from Gamma sector. [SUPPORT AND FEEDBACK] Please contact duetblock@duetblock.com with any inquiry or feedback. Please visit http://www.duetBlock.com for more detail.
STEM Defense
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About This Game "STEM Defense" immerses yourself in a strategic battle within the human body, where you manipulate pathways and tower placements on a dynamic hexagonal grid. This educational tower defense game teaches players about the immune system through engaging gameplay, focusing on the defense against microscopic invaders. Key Features Path Expansion: Dynamically extend the pathways pathogens travel to strategically shape each level and increase the effectiveness of your defenses. Tower Placement Strategy: Strategic placement of your towers is essential. Elevate your towers to gain damage bonuses, crucial for optimizing defense effectiveness. Mutation-Based Upgrades: Enhance your defenses through epigenetic modifications, providing temporary boosts, and genetic mutations for permanent enhancements. This mirrors real-life biological defense mechanisms. Experience and Genetic Enhancements: Gain experience to unlock advanced defensive capabilities and permanent genetic upgrades, enhancing your ability to combat pathogens. Varied Enemy Types: Encounter diverse pathogens, each with unique abilities. Develop strategies to handle enemies that can regenerate, accelerate, or spawn additional threats. Endless Replayability: With a multitude of genetic enhancements and adaptive enemy tactics, each game offers new challenges and decisions, ensuring unique experiences with every playthrough. Coming Soon:Acquired immunity mechanics!! Support Independent Development As a solo developer not well-versed in the art of social media, I rely on the support of players like you. If you've enjoyed "STEM Defense," please help spread the word and make it known to others!
Screenshots
Verdict
The clearest difference is in-app purchases: STEM Defense at none against neoDefense's 5. STEM Defense also leads on update cadence (every 3 days vs every 2 months) and device support (4 vs 2). neoDefense's advantage is price ($1.99 vs $6.99) and iOS requirement (9.0 vs 15.0). On 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
neoDefense costs $1.99 and STEM Defense $6.99 up front. neoDefense sells 5 one-off in-app purchases. STEM Defense asks for nothing beyond the download.
neoDefense ships an update every 2 months, STEM Defense every 3 days. The most recent releases landed on October 26, 2026 and August 22, 2026 respectively.
| Parameter | neoDefense | STEM Defense |
|---|---|---|
| Price | $1.99 — better | $6.99 |
| Rating | 4.7 (547 ratings) — better | — |
| Positive reviews | 87.7% of reviews | — |
| Number of ratings | 547 — better | — |
| Update frequency | Every 2 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 9.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 156 MB | 411 MB |
| Age rating | 9+ | 9+ |
| Developer | SON GIL | Andrea Carlomaria Sertorio |
Bugs and requests
neoDefense
Reported bugs
3 issues- Impossible to complete certain levels
- Compatibility issues on some devices
- Boost tower not available as advertised
Requested features
5 requests- More levels and content updates
- Option to reset levels
- Ability to save progress across devices
- Difficulty settings or modes
- More tower/weapon variety
STEM Defense
Not enough reviews yet to summarise bugs or requests.
In-app purchases
neoDefense
- Unlock & Play Gamma Sector$0.99
- Unlock & Play Delta Sector$0.99
- Unlock & Play Epsilon Sector$0.99
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- Unlock & Play Zeta Sector$0.99
- Unlock & Play Eta Sector$0.99
STEM Defense
No in-app purchases









