Comparison

Keep Skiing vs Retro Invader Cosmic Shooter

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

Head to head
About

Keep Skiing

Features
Read full description

Let us go skiing this winter. You just need to tap on the left or right side of screen to control the skier. It is easy and full of fun. Try to pass flags as more as possible to get higher score. There have different kinds of trees to interfere you. Besides, you will encounter snowmen, walking deers or moving snowmobiles on your way.

About

Retro Invader Cosmic Shooter

Features
Read full description

THE INVASION HAS BEGUN. EARTH'S LAST DEFENSE IS YOU. Retro Invader Cosmic Shooter brings the legendary arcade experience to your fingertips. Pilot your starfighter against relentless waves of alien invaders in a neon-drenched battle for survival. Every wave hits harder. Every second counts. CLASSIC ARCADE COMBAT, REIMAGINED - Command your starfighter against 28 alien invaders per wave - Face 3 deadly alien species: Squids (40 pts), Crabs (30 pts), and Octopuses (20 pts) - Hunt the Mystery UFO for massive bonus points (100-300 pts) - Protect 4 destructible barrier shields from enemy fire - Authentic formation movement and attack patterns PURE PIXEL ART VISUALS - Hand-crafted pixel art sprites in a striking neon color palette - Glowing green, magenta, cyan, and yellow against the void of deep space - Satisfying particle explosions when you blast enemies to bits - Animated starfield background for cosmic atmosphere INTENSE WAVE-BASED PROGRESSION - Each new wave accelerates enemy speed by 15% - Alien formations march, descend, and fire with increasing aggression - Dynamic difficulty that rewards skilled pilots with higher scores - Procedurally generated mission briefings and combat reports DESIGNED FOR MOBILE - Responsive touch D-pad and fire button built for fast-paced combat - Haptic feedback on every shot, explosion, and game over - Portrait orientation for comfortable one-handed play - Quick 5-15 minute sessions perfect for commutes, breaks, or bedtime battles - Optimized 45 FPS game loop for smooth performance ZERO PAY-TO-WIN - No in-app purchases. No loot boxes. No pay walls. - Pure skill-based arcade action the way it was meant to be played Whether you grew up feeding quarters into arcade cabinets or discovering the thrill of classic shoot-em-ups for the first time, Retro Invader Cosmic Shooter delivers the tension, challenge, and satisfaction of the golden age of gaming -- right in your pocket. The aliens are descending. The barriers are crumbling. Your starfighter is armed and ready. LAUNCH YOUR MISSION NOW.

Screenshots

Keep Skiing4 screens
Retro Invader Cosmic Shooter4 screens

Verdict

The call

The clearest difference is ads: Keep Skiing at none against Retro Invader Cosmic Shooter's shown. Keep Skiing also leads on iOS requirement (6.0 vs 15.1). Retro Invader Cosmic Shooter's advantage is update cadence (every 7 months vs every 22 months). On price, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Keep Skiing ships an update every 22 months, Retro Invader Cosmic Shooter every 7 months. The most recent releases landed on November 2, 2026 and October 28, 2026 respectively.

Scorecard3 real differences ยท 3 level
Keep Skiing versus Retro Invader Cosmic Shooter: the parameters behind the verdict, then further details
ParameterKeep SkiingRetro Invader Cosmic Shooter
PriceFreeFree
Update frequencyEvery 22 monthsEvery 7 months โ€” better
AdsNo โ€” betterYes
In-app purchasesNoNo
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPod
Requires iOS6.0 โ€” better15.1
Further details โ€” not scored
Size19 MB40 MB
Age rating4+4+
DeveloperChuanming ChangMasaki Kenneth Micheal Akita

In-app purchases

None

Keep Skiing

No in-app purchases

None

Retro Invader Cosmic Shooter

No in-app purchases

Questions

Is Keep Skiing free?
Keep Skiing is free to download, with no in-app purchases.
Is Retro Invader Cosmic Shooter free?
Retro Invader Cosmic Shooter is free to download, with no in-app purchases.
Do Keep Skiing or Retro Invader Cosmic Shooter have ads?
Retro Invader Cosmic Shooter shows ads; Keep Skiing does not.
Which is updated more often, Keep Skiing or Retro Invader Cosmic Shooter?
Keep Skiing ships an update every 22 months, and Retro Invader Cosmic Shooter every 7 months. Most recently, Keep Skiing was updated on November 2, 2026 and Retro Invader Cosmic Shooter on October 28, 2026.

Other comparisons