Comparison

Alien Barrage vs Sky Guardian

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

Head to head
About

Alien Barrage

Defend Earth from relentless alien invaders in this fast-paced retro arcade shooter. Dodge plasma, collect powerups, and survive challenging boss battles. Compete on global leaderboards for the highest score and wave survived.

Highlights
  • Touch-and-drag controls with automatic firing
  • Endless escalating waves of alien enemies
  • Bonus Rounds and Boss Battles
  • Collectible powerups and screen-clearing bombs
  • Unlockable ships and difficulty modes
  • Game Center leaderboards and achievements
Features
Read full description

Defend Earth from endless alien waves in this fast-paced retro arcade shooter. Collect powerups, survive boss battles, and climb the global leaderboards. Touch and drag to move your ship while it fires automatically, dodge incoming plasma, and clear wave after wave of invading aliens before they reach the bottom. What starts as a classic arcade battle quickly escalates into a tougher survival challenge, with faster enemies, more pressure, and bigger rewards the longer you last. Alien Barrage mixes traditional formation-based waves with special events that keep every run fresh. Every 4th level is a Bonus Round, where aliens break formation and streak across the screen in unpredictable patterns for extra points. Every 7th level is a Boss Level, featuring a massive enemy that absorbs heavy damage, fires missiles, and gets tougher each time it returns. Powerups can turn the tide in an instant. Collect Rapid Fire to double your fire rate, Spread Shot to blast multiple enemies at once, Shield to absorb a hit, and Extra Life to stay in the fight longer. When things get desperate, unleash a bomb to clear the screen and save your run. Choose how you want to play with Easy, Normal, and Hard difficulty modes, each offering a different challenge level and score potential. Fly the default Classic Ship or unlock the Dual Cannon ship for permanent double firepower. Compete on Game Center leaderboards for top score and highest wave survived, challenge your friends, and unlock achievements as you play. Whether you want a quick arcade session or a long high-score grind, Alien Barrage delivers classic shooter action with modern progression and competitive replay value. Features: - Touch-and-drag controls with automatic firing - Endless escalating waves of alien enemies - Bonus Rounds every 4th level - Boss battles every 7th level - UFO encounters, swooping aliens, and missile attacks - Four powerups: Rapid Fire, Spread Shot, Shield, and Extra Life - Screen-clearing bombs for clutch moments - Classic Ship plus unlockable Dual Cannon ship - Game Center leaderboards and achievements - Three difficulty modes for casual play or hardcore score chasing

About

Sky Guardian

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Sky Guardian is an offline bullet hell space shooter. Drag to move, dodge enemy fire and keep shooting as you push through the ASHFALL campaign. Learn each boss pattern, earn upgrades and try a different ship for your next run. It is free to play, supported by ads, with no in-app purchases. Fly the ASHFALL campaign across 100 chapters as an Aether storm swallows one system after another. Worlds bend the rules with hazards such as icing, poison fog, wind and gusts, meteor strikes, black-hole pull, time distortion, and more — so survival is about dodging as much as shooting. A world map, story dialogue, and a named boss battle at the end of every single chapter carry you from the first wave to the final storm. Upgrade your ships between runs and take down 100 bosses across the campaign. FEATURES - 100-chapter story campaign on a chapter-select map, across escalating acts of danger - 100 named bosses — one per chapter, with title cards, weak points and battle music, drawing on 15 attack patterns; crack the cores, don't chew a bullet sponge - 16 flyable ships, each a true sidegrade with its own feel and signature weapon — armored patrol, glass-cannon interceptor, rapid-fire gunship, juggernaut - 25 distinct worlds with unique visual identities, music moods and changing battlefield conditions - Deep hangar: 8 permanent upgrade tracks, 12 modular ship parts, and a SPECIAL MODULE slot with own-and-equip modules and run boosts - STORM CORES and the SINGULARITY climax — late bosses pull the arena apart before they die - 8 modes: Campaign, Sky Runner, Endless, Survival, Boss Rush, Time Attack, Chaos, and ASCENSION — each with its own records - ASCENSION roguelite mode — draft power-up cards, bank a single life, and push a permadeath run as far as your build takes you - End-of-chapter card drafts and weapon combinations for run-specific builds - 41 tiered achievements, a companion drone, escort missions, daily objectives with streak bonuses, a weekly challenge, and a pilot level system - 28 engine-trail colours, from the standard wake to gold and mastery unlocks - COMMUNITY LEVELS — paste a compatible shared code to play a custom stage. No account required. - Dynamic, biome-reactive music that shifts mood per world, with adaptive low-HP tension BUILT RIGHT - Full touch controls (drag to move, on-screen pause and bomb) plus keyboard support - The campaign plays offline — no internet connection needed to fly (ads need a connection to load) - Free to play, supported by ads: full-screen ads appear between runs, an ad may appear when you open the game, and optional rewarded ads let you revive or double your coins. No in-app purchases, no account system - Your save is stored locally; no account or sign-in is required. Advertising privacy choices are available in the game settings when applicable. The game does not request contacts or location access. If you grew up on classic arcade shmups and vertical scrolling shooters, this space shooter is built for you: readable bullets, honest hitboxes, boss battles that reward pattern-reading, and a difficulty curve that respects your time. No wifi, no paywall — just you, your spaceship, and the storm. Break the storm, crack the cores, and reclaim the sky.

Screenshots

Alien Barrage4 screens
Sky Guardian4 screens

Verdict

The call

The clearest difference is in-app purchases: Sky Guardian at none against Alien Barrage's 6. Sky Guardian also leads on update cadence (every 3 days vs every 3 months) and iOS requirement (15.0 vs 17.6). Alien Barrage'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. Alien Barrage sells 6 one-off in-app purchases. Sky Guardian asks for nothing beyond the download.

UpkeepUpdate frequency

Alien Barrage ships an update every 3 months, Sky Guardian every 3 days. The most recent releases landed on October 5, 2026 and October 10, 2026 respectively.

Scorecard4 real differences · 5 level
Alien Barrage versus Sky Guardian: the parameters behind the verdict, then further details
ParameterAlien BarrageSky Guardian
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 3 monthsEvery 3 days — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.615.0 — better
Further details — not scored
Size45 MB52 MB
Age rating12+12+
Developerarnold biffnaEMRE OZEL

In-app purchases

6 purchases

Alien Barrage

One-time6
  • 3 Revives$0.99
  • 10 Revives$1.99
  • 10 Extra Bombs.$1.99
Show 3 more
  • Dual Shooter Ship$2.99
  • 40 revives$4.99
  • 100 Revives$9.99
None

Sky Guardian

No in-app purchases

Questions

Is Alien Barrage free?
Alien Barrage is free to download, with in-app purchases available.
Is Sky Guardian free?
Sky Guardian is free to download, with no in-app purchases.
Do Alien Barrage or Sky Guardian have ads?
Sky Guardian shows ads; Alien Barrage does not.
Which is updated more often, Alien Barrage or Sky Guardian?
Alien Barrage ships an update every 3 months, and Sky Guardian every 3 days. Most recently, Alien Barrage was updated on October 5, 2026 and Sky Guardian on October 10, 2026.

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