Comparison

SPHERE vs HexTowerDefense

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

SPHERE

Features
Read full description

- 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.

About

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.

Highlights
  • Hexagonal grid placement
  • 50 handcrafted campaign levels
  • Daily challenges and endless mode
  • Community Workshop for sharing layouts
  • Eight tower types
  • Retro neon aesthetic
Features
Read full description

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

SPHERE4 screens
HexTowerDefense4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. HexTowerDefense sells 4 one-off in-app purchases. SPHERE asks for nothing beyond the download.

UpkeepUpdate frequency

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.

Scorecard4 real differences · 5 level
SPHERE versus HexTowerDefense: the parameters behind the verdict, then further details
ParameterSPHEREHexTowerDefense
PriceFreeFree
Rating—5.0 (4 ratings) — better
Number of ratings—4 — better
Update frequencyEvery 4 monthsEvery 10 days — better
AdsYesNo — better
In-app purchasesNo — betterYes
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better18.5
Further details — not scored
Size154 MB106 MB
Age rating4+4+
DeveloperTomoki FukushimaMaxime Hussenet

In-app purchases

None

SPHERE

No in-app purchases

4 purchases

HexTowerDefense

One-time4
  • x2/x4 Speed$1.99
  • Remove Ads$3.99
  • Gotta Go Faster$4.99
Show 1 more
  • All-in-One$4.99

Questions

Is SPHERE free?
SPHERE is free to download, with no in-app purchases.
Is HexTowerDefense free?
HexTowerDefense is free to download, with in-app purchases available.
Do SPHERE or HexTowerDefense have ads?
SPHERE shows ads; HexTowerDefense does not.
Which is updated more often, SPHERE or HexTowerDefense?
SPHERE ships an update every 4 months, and HexTowerDefense every 10 days. Most recently, SPHERE was updated on November 8, 2026 and HexTowerDefense on October 31, 2026.

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