Comparison

Sphere TD vs Overclock Grid

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

Head to head
About

Sphere TD

A complex tower defense game where you build and upgrade towers to defend against waves of spheres. Strategize with deep customization, resource management, and research to overcome challenges. Offers extensive replayability with numerous levels and modes.

Highlights
  • Tower and projectile customization
  • 30 base towers with 28+ stats
  • 33 mods with millions of combinations
  • Research and crafting system
  • Tower inventory and energy management
  • 50 hand-crafted levels and endless mode
  • Offline and online play with cloud sync
Read full description

Sphere TD is a tower defense game with one difference: there are no preset towers. You build every tower yourself, then send it out to defend your base. WHAT IS IN THE GAME - 39 towers, each with its own grid layout and function - 33 mods, each with tiers, MK upgrades, a B-Side function, and 3 perks - 50 hand-crafted maps with three objectives each - Endless mode after map 50, plus map-specific challenges - A research tree, mod crafting, and a trader - Spheres that scale into elites, bosses, armored, shielded, cloaked and flying - Offline play, with cloud sync and leaderboards - Cross platform: mobile and desktop NO NONSENSE No pay to win. No time gates. No paywalls. No ad spam. No loot boxes. Funding the Galatium Academy is appreciated, never required. MESSAGE FROM THE DEV Hi, I'm Alex, a solo developer, and Sphere TD is my first game. If you like tower defense, meta progression, and theorycrafting builds, you should feel right at home. Come discuss tower builds with other friendly cadets on Discord. I am committed to 10 years of support. You want it, I'll make it. Ready to join the Galatium Academy?

About

Overclock Grid

Features
Read full description

Build your ultimate PC rig on a grid and master the art of overclocking! In Overclock Grid, you are the engineer of a high-stakes server room. Place components, manage intricate power grids, and balance thermal outputs to maximize your idle income. But be careful—exceed your power or cooling capacity, and you’ll face the dreaded Thermal Throttling. Core Features: • Hardware Logic Puzzle: Strategic placement matters. Build efficient clusters to earn more money every second. • Manage the Heat: Use fans, coolers, and liquid cooling to prevent system failure. • Prestige for Power: When the rig hits its limits, perform an Overclock Reset to collect permanent Shards and unlock powerful skill upgrades. • Offline Earnings: Your servers work while you sleep. Check your SYSTEM BOOT LOG when you return! • Industrial Atmosphere: Immerse yourself in a dark, cyberpunk server environment with reactive neon cables. Do you have the skills to optimize the ultimate rig? Balance your power, manage the heat, and rule the grid! Overclock Grid is free to play, with optional rewarded ads to boost progress and in-app purchases

Screenshots

Sphere TD4 screens
Overclock Grid4 screens

Verdict

The call

Sphere TD and Overclock Grid are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Sphere TD sells 10 one-off in-app purchases and Overclock Grid sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
Sphere TD versus Overclock Grid: the parameters behind the verdict, then further details
ParameterSphere TDOverclock Grid
PriceFreeFree
Rating4.6 (9 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings9 — better—
Update frequencyEvery 2 days—
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size332 MB44 MB
Age rating12+4+
DeveloperStandardIssueGamesAYBERK YATAGAN

In-app purchases

10 purchases

Sphere TD

One-time10
  • Au Field Ration$4.99
  • Defender Starter Pack$7.99
  • Au Supply Cache$9.99
Show 7 more
  • Galatium Express Token$9.99
  • Galatium Academy Pack$14.99
  • Shadow Broker Vantage$19.99
  • Au Enterprise Fund$24.99
  • Flux Enrichment Grant$24.99
  • Au Strategic Stockpile$49.99
  • Au Global Reserve$99.99
2 purchases

Overclock Grid

One-time2
  • Starter Pack$1.99
  • Remove Ads$3.99

Questions

Is Sphere TD free?
Sphere TD is free to download, with in-app purchases available.
Is Overclock Grid free?
Overclock Grid is free to download, with in-app purchases available.
Do Sphere TD or Overclock Grid have ads?
Both Sphere TD and Overclock Grid show ads.

Other comparisons