Comparison

Alien Attack vs Span

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

Head to head
About

Alien Attack

Control a rapidly evolving alien lifeform and conquer Earth. Consume humans to grow stronger, unlock new mutations, and dominate every battlefield. Upgrade your abilities and spread your alien domination across the planet.

Highlights
  • Evolve alien lifeform
  • Consume humans for energy
  • Unlock new mutations and powers
  • Action-packed battles
  • Upgrade abilities
  • Conquer world locations
Features
Read full description

Earth has become your hunting ground. Control a rapidly evolving alien lifeform, consume humans, and grow stronger with every invasion. Every battle makes you stronger. Every evolution unlocks new powers. Every city brings fresh prey. EVOLVE YOUR ALIEN Unlock powerful mutations, increase your strength, and transform into the ultimate lifeform. DEVOUR EVERYTHING Humans are your food. Hunt them down, consume them, and use their energy to grow even stronger. ACTION-PACKED GAMEPLAY Fight endless waves of enemies, destroy everything in your way, and dominate every battlefield. UPGRADE & MUTATE Discover new abilities, improve your attacks, and create unstoppable mutation combinations. CONQUER THE WORLD Invade new locations, face stronger enemies, and spread your alien domination across the planet. The invasion has begun. How far can your evolution go?

About

Span

Features
Read full description

Span is a calm, physics-driven bridge builder. Draw a bridge across the gap, choose your materials, then press Test and watch it carry the load — or buckle in glorious slow motion. Every beam glows with the forces running through it: a live X-ray of tension and compression, so you can see exactly why it held, or why it snapped. Rewind, move one strut, try again. • 57 hand-built levels across eight worlds — timber valleys to ocean straits • Timber, steel, stone, cables and road & rail decks • Real hazards: wind, earthquakes, thermal stress and floods • Drawbridges, canal locks, trains and passing ships • God-mode Sandbox: unlimited budget, every material, every disaster • Level editor: sculpt terrain, place anchors, schedule the traffic • One-tap replay export — share your best holds and worst fails No ads. No timers. No subscription. Buy once, build forever. Free through Chapter 1 — unlock the full game (all worlds, the sandbox and the editor) with a single purchase. Road vehicle models by Daniel Zhabotinsky (CC BY 4.0). Full credits in-app.

Screenshots

Alien Attack4 screens
Span4 screens

Verdict

The call

The clearest difference is in-app purchases: Alien Attack at none against Span's 1. Alien Attack also leads on update cadence (daily vs every 5 days) and iOS requirement (15.0 vs 17.0). Span's advantage is ads (none vs shown). 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. Span sells 1 one-off in-app purchase. Alien Attack asks for nothing beyond the download.

UpkeepUpdate frequency

Alien Attack ships an update daily, Span every 5 days. The most recent releases landed on September 18, 2026 and September 17, 2026 respectively.

Scorecard4 real differences · 6 level
Alien Attack versus Span: the parameters behind the verdict, then further details
ParameterAlien AttackSpan
PriceFreeFree
Rating4.0 (3 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings3 — better—
Update frequencyDaily — betterEvery 5 days
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supported—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size180 MB60 MB
Age rating12+4+
DeveloperHAPPY GAME COMPANY TEKNOLOJI ANONIM SIRKETIDodecki Labs

In-app purchases

None

Alien Attack

No in-app purchases

1 purchases

Span

One-time1
  • Span Complete$7.99

Questions

Is Alien Attack free?
Alien Attack is free to download, with no in-app purchases.
Is Span free?
Span is free to download, with in-app purchases available.
Do Alien Attack or Span have ads?
Alien Attack shows ads; Span does not.
Which is updated more often, Alien Attack or Span?
Alien Attack ships an update daily, and Span every 5 days. Most recently, Alien Attack was updated on September 18, 2026 and Span on September 17, 2026.

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