Kepler Attack vs Void
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Kepler Attack
Engage in a retro arcade space shooter experience on your iPhone and Apple Watch. Destroy waves of alien invaders with power-ups and intuitive controls. Enjoy fast-paced gameplay perfect for short bursts of fun.
- Space shooter gameplay
- Alien invasion waves
- Power-ups (Shield, Triple Shot, etc.)
- Apple Watch Crown controls
- iPhone swipe controls
- Retro arcade graphics
- Short burst gameplay
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Featured in Apple's "Great on watchOS 6" and "Our Favourite Apple Watch Apps" collections! #2 Casual Game in the US! Kepler Attack is an arcade game for your iPhone and Apple Watch. Fly through space and destroy waves of alien space invaders from Kepler-452b. “I’m just amazed that this is on my Watch.” - Tom, host of The Apple WatchCast Podcast - http://www.applewatchcast.com “I think this is actually my personal favorite new game now on the Apple Watch because of its really fast pacing which is perfect for these types of games.” - HotshotTek, 10 Awesome Apple Watch Games Apps of 2019 • Inspired by Gyruss, Galaga, Galaxian and Space Invaders! • Beautiful retro arcade graphics! • Fast paced alien attack waves with a variety of enemy space invaders! • Power-ups include Shield, Triple Shot, Rapid Fire and Smart Bomb! • Intuitive and simple controls using the Crown on the Watch! • Swipe to move on the iPhone! • Short burst gameplay is perfect for the Watch and iPhone! • Retro sound effects on the iPhone! • Play anywhere, anytime! • Includes Valentine's Day and Santa Christmas Holiday theme! • Runs at 60fps on the Watch! Relive the glory days of the arcade on your Apple Watch and iPhone. Thanks for playing Johnno & Pete
Void
Engage in a challenging arcade shoot 'em up experience with intense boss battles and a distinctive retro style. Survive waves of enemies, collect power-ups, and maintain your combo to achieve high scores. Enjoy smooth gameplay and even play on your Apple Watch.
- Bullet hell style bosses
- Retro aesthetic
- Power-up collection
- Combo multiplier
- Controller support
- Autosave progress
- Playable on Apple Watch
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Void-x is an intense arcade shoot em up, with bullethell style bosses and a unique retro aesthetic. Try to stay alive as you work your way through epic boss fights, gathering powerups, and keeping that combo going for a high score! Features: - Controller support. - Ability to change touch and controller sensitivity. - Autosave, gotta take a phone call or get off the bus, don't worry your current progress is saved. - Game Center support for high scores and achievements. - Super smooth gameplay at 120fps on supported devices. - The full game playable on Apple Watch!
Screenshots
Verdict
The clearest difference is rating: Void at 4.8 against Kepler Attack's 4.5. Void also leads on review sentiment (90% vs 81%). Kepler Attack's advantage is ratings volume (942 vs 55) and chart position (#40 vs unranked). On update cadence, ads, in-app purchases and monetization model 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
Kepler Attack costs $1.99 and Void $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Void holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: Kepler Attack has 942 ratings behind it against 55, so its average is the more settled of the two. Written reviews point the same way: 81% of Kepler Attack's written reviews are positive against 90% of Void's.
Kepler Attack ships an update every 6 weeks, Void every 2 months. The most recent releases landed on September 20, 2026 and September 18, 2026 respectively.
| Parameter | Kepler Attack | Void |
|---|---|---|
| Price | $1.99 — better | $3.99 |
| Rating | 4.5 (942 ratings) | 4.8 (55 ratings) — better |
| Positive reviews | 81.4% of reviews | 90.5% of reviews — better |
| Number of ratings | 942 — better | 55 |
| Update frequency | Every 6 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | #40 — better | — |
| Devices | iPhone, iPad, iPod, Apple Watch | iPhone, iPad, iPod, Apple Watch, Vision Pro — better |
| Requires iOS | 12.1 — better | 15.0 |
| Further details — not scored | ||
| Size | 31 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Red Sprite Studios | James Swiney |
Customer experience
Kepler Attack
Void
Bugs and requests
Kepler Attack
Reported bugs
5 issues- Game doesn't play complete rip off
- Just says on the watch version that it has to be installed on my iPhone for it to work. It's installed on my iPhone. Doesn't work.
- This seems like a good game but I don't see it on my watch.
- I have the first version watch Apple one, and it does not work on the watch,And has offered me a refund, I appreciate it.
- It won't download on my watch
Requested features
2 requests- Add a golden starship IF
- Please add upgrades so we can have bettr ships
Void
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Kepler Attack
No in-app purchases
Void
No in-app purchases
