Comparison

Survival Kingdom TD vs Perimeter Zero

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

Head to head
About

Survival Kingdom TD

Defend your castle in this endless tower defense game. Strategically build your base, train units, and upgrade defenses to survive increasingly challenging enemy waves. Manage resources to strengthen your kingdom and overcome bosses.

Highlights
  • Endless tower defense gameplay
  • Build and upgrade kingdom
  • Train ranged units
  • Unlock magic defenses
  • Manage coin and crystal resources
  • Fight bosses
Features
Read full description

Survival Kingdom TD is an endless tower defense game where strategy, upgrades, and survival come together. Defend your castle against waves of enemies coming from all directions. Build your base, train your army, and upgrade your defenses to survive longer. Earn resources after each wave and choose your path: Upgrade your tower, grow your army, or strengthen your economy. Game Features: • Endless tower defense gameplay • Build and upgrade your kingdom • Train different ranged units • Unlock powerful magic defenses • Manage Coin and Crystal resources • Fight stronger waves and bosses Simple to play, hard to master. How long can you survive?

About

Perimeter Zero

Features
Read full description

Perimeter Zero is a tower-defense game about running a private security operation, not casting spells. You're the commander: place cameras, lights, gates, guards, drones, and a growing arsenal of detection and response tools, then hold the perimeter as intruders test every gap in your coverage. See your coverage, not just your budget Every camera, sensor, and guard shows its real detection and response radius before the night starts. Placement isn't guesswork — you can see exactly where your perimeter is strong and where it's exposed, then build accordingly. A loop that tests you, not just your equipment When multiple threats hit at once, you choose which guard responds to which — a deliberate call under pressure, not an autopilot response. Detection, response, and slowdown layer together into real tactical decisions across cameras, lights, gates, K9 units, thermal towers, cyber nodes, and more. 22 contracts, from a starter warehouse to a national command network Start small with a two-door warehouse. Escalate through delivery depots, tech campuses, research labs, data vaults, airports, harbors, stadiums, hospitals, banks, and eventually a combined national command-network finale — each with its own threat mix, layout, and pressure. Nine intruder types, each demanding a different answer Prowlers, runners, saboteurs, hackers, insiders, credential thieves, vehicle crews, crew bosses, and stealth infiltrators all pressure your perimeter differently. Layer detection and response so nothing slips through unseen. Permanent progression that matters Spend contract earnings in the Upgrade Lab on sixteen permanent upgrades across four specializations — Perimeter Core, Command & Intel, Response Teams, and High-Security Ops. Every contract makes your operation stronger for the next one. Daily operations and mastery A rotating daily contract with its own modifier keeps every return trip different. Chase mastery stars, best grades, and win streaks across every site you've cleared. Fair monetization Banner ads appear only on menu screens — Home, Contracts, Upgrades, and Results. Active night gameplay is always ad-free. A single one-time Premium purchase removes ads entirely and adds no gameplay advantage; Restore Purchases is available anytime. Game Center support Leaderboards and achievements track contracts cleared, best cash hauls, daily streaks, and threats stopped — fully optional, and the game works completely fine if you're signed out. Build the perimeter. Watch the coverage. Hold the line.

Screenshots

Survival Kingdom TD4 screens
Perimeter Zero4 screens

Verdict

The call

The clearest difference is in-app purchases: Survival Kingdom TD at none against Perimeter Zero's 1. Perimeter Zero's advantage is update cadence (every 2 days vs every 5 days). On price, ads, device support and iOS requirement 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. Perimeter Zero sells 1 one-off in-app purchase. Survival Kingdom TD asks for nothing beyond the download.

UpkeepUpdate frequency

Survival Kingdom TD ships an update every 5 days, Perimeter Zero every 2 days. The most recent releases landed on October 23, 2026 and October 28, 2026 respectively.

Scorecard2 real differences · 8 level
Survival Kingdom TD versus Perimeter Zero: the parameters behind the verdict, then further details
ParameterSurvival Kingdom TDPerimeter Zero
PriceFreeFree
Rating3.7 (6 ratings) — better—
Positive reviews33.3% of reviews—
Number of ratings6 — better—
Update frequencyEvery 5 daysEvery 2 days — better
AdsYesYes
In-app purchasesNo — betterYes
MonetizationAd-supported—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better16.0
Further details — not scored
Size281 MB11 MB
Age rating4+9+
DeveloperHook Games LimitedHyacinthe Loua

In-app purchases

None

Survival Kingdom TD

No in-app purchases

1 purchases

Perimeter Zero

One-time1
  • PerimeterZero Premium$2.99

Questions

Is Survival Kingdom TD free?
Survival Kingdom TD is free to download, with no in-app purchases.
Is Perimeter Zero free?
Perimeter Zero is free to download, with in-app purchases available.
Do Survival Kingdom TD or Perimeter Zero have ads?
Both Survival Kingdom TD and Perimeter Zero show ads.
Which is updated more often, Survival Kingdom TD or Perimeter Zero?
Survival Kingdom TD ships an update every 5 days, and Perimeter Zero every 2 days. Most recently, Survival Kingdom TD was updated on October 23, 2026 and Perimeter Zero on October 28, 2026.

Other comparisons