SPHERE vs HexTowerDefense
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
SPHERE
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- Worldview - The Sphere (Earth) is now facing the threat of annihilation by invaders. Humanity has been forced from their homes and has begun developing new weapons in underground facilities. As countless lives and resources are lost, humans have finally succeeded in developing a new weapon capable of opposing the invaders. Now, having endured years of agony, it is time to advance toward the hope of liberating the Sphere! Humanity is now launching a counteroffensive! - Game Overview - This is a simple placement-style tower defense game where you place units to defeat incoming enemies! As you defeat enemies, your resources increase, allowing you to place new units or upgrade existing ones! - Game Difficulty - Difficulty levels are EASY, NORMAL, and HARD! This game is suitable for tower defense beginners to advanced players, offering a challenging gameplay experience for everyone! There are 10 refined stages for each difficulty level, with each stage lasting about 5 to 15 minutes! Enjoyable even during a short break! Whether you are new to tower defense or a master, this game is for you! - Unit Types - Players can use the following seven types of units: [Attack Units] Each unit excels in different situations, so place them appropriately according to the battlefield conditions! Standard Attack Turret: A unit with a short attack interval, specializing in defeating enemies one by one. Area Attack Turret: A unit that excels in attacking multiple enemies with explosive blasts. Piercing Attack Turret: A unit that excels in attacking enemies lined up in a straight line. [Support Units] These units enhance the advantages of friendly units, so place them without hesitation when you have extra resources! Cooling Turret: A unit that slows down the speed of enemies. Incendiary Turret: A unit that increases the attack power of attack units. [Support Attack Units] Use these units to weaken enemies before friendly units attack or as an emergency response to prevent enemy breakthroughs! Fixed-Point Attack Unit: Provides pinpoint missile support attacks at specific locations. Linear Attack Unit: Conducts satellite laser bombardment at designated linear locations.
HexTowerDefense
Engage in strategic tower defense on a hexagonal grid. Master placement, range, and timing across 50 campaign levels, daily challenges, and a community workshop. Enjoy a retro aesthetic with no energy timers and limited ads.
- Hexagonal grid placement
- 50 handcrafted campaign levels
- Daily challenges and endless mode
- Community Workshop for sharing layouts
- Eight tower types
- Retro neon aesthetic
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Place towers. Hold the line. HexTowerDefense is a minimalist tower defense game built around a hexagonal grid. Every placement decision matters — angles, range, and timing are yours to control. Three ways to play Campaign — 50 handcrafted levels with Normal, Hard, Veteran & Nightmare difficulty. Earn up to 3 stars per level. Challenges — Daily run, Endless mode, invisible enemies, and more. Complete daily challenges to earn Workshop Tokens. Sandbox — Build freely, experiment, validate your layout, then share it with the world through the Community Workshop. Community Workshop Browse boards submitted by other players, download and test them, rate your favorites, and submit your own for review. Eight tower types, endless possibilities Neon-on-black retro aesthetic. No energy timers. Limited ads.
Screenshots
Verdict
The clearest difference is in-app purchases: SPHERE at none against HexTowerDefense's 4. SPHERE also leads on iOS requirement (13.0 vs 18.5). HexTowerDefense's advantage is ads (none vs shown) and update cadence (every 10 days vs every 4 months). On price 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. HexTowerDefense sells 4 one-off in-app purchases. SPHERE asks for nothing beyond the download.
SPHERE ships an update every 4 months, HexTowerDefense every 10 days. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.
| Parameter | SPHERE | HexTowerDefense |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (4 ratings) — better |
| Number of ratings | — | 4 — better |
| Update frequency | Every 4 months | Every 10 days — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 18.5 |
| Further details — not scored | ||
| Size | 154 MB | 106 MB |
| Age rating | 4+ | 4+ |
| Developer | Tomoki Fukushima | Maxime Hussenet |
In-app purchases
SPHERE
No in-app purchases
HexTowerDefense
- x2/x4 Speed$1.99
- Remove Ads$3.99
- Gotta Go Faster$4.99
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- All-in-One$4.99









