Impulse One vs Zarsthor
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Impulse One
Pilot a spaceship to rescue stranded employees from a chaotic company. Navigate challenging environments with high gravity, timed conditions, and combat.
- Rescue stranded employees
- Impulse-driven spaceship piloting
- High gravity challenges
- Timed conditions
- Combat with incoming fire
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The soda fountains are on overload. Coffee service has been suspended. A technical state of panic exists. The employees are terrified by arbitrary design decision changes. Rescue stranded employees of the PLBM Games company and return them safely to home in your impulse-driven spaceship. This game is challenging... Can you land the spaceship safely? In high gravity? Under stressful timed conditions? In combat? With real bullets coming back at you?
Zarsthor
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Space invaders are terrorizing universe, can you become hero and save it? UFO, Aliens need your help, whole galaxy need it. This free game is Retro Arcade endless fun, various gameplay levels, various bosses, enemy, over 7 spaceships to unlock and a lot more, expect it, there is original story. Imagine you got a normal life, one day you want to change it, you are going in universe adventure, why would you do it? What can happen during that travel? Over time game will bring your answers to those questions, in-game hero made decision, to change his life, but why? Checkout original story. An arcade-machine in your pocket. Tap to test your reflex. Various gameplay levels (don't shoot to astronauts, collect something, protect, destroy meteor, and a lot more, 40+ levels) and various bosses to defeat . Open world map (with side and main missions), you decide which one you will take. Hardcore gameplay, this game is hard, it's true arcade, each second can change your life and make your ship piece of parts (there is also easy mode). Imagine tons of glow asteroids, it's just a start. Discover original galactica story in a strange universe. Discover Space Frontier No IAP And a lot more :-} This app is Free to download This is offline, not online game. Best time waster. Download me Twitter: https://twitter.com/DonislawDev Facebook: https://www.facebook.com/DonislawDev-432377923770925/ Wish to help with translate game to other languages? Contact me at: donislawdev@gmail.com Special Thanks to Adam Rucki (Shephard) for making most SFX in this game Special Thanks to Marek Majewski. Special Thanks to www.gamedeveloperstudio.comC:\Users\DonislawDev\AppData\Roaming\Mozilla\Firefox\Profiles\fk7vmmzi.default
Screenshots
Verdict
The clearest difference is iOS requirement: Impulse One at 9.0 against Zarsthor's 12.0. On price, update cadence, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Impulse One ships an update every 11 months, Zarsthor every 12 months. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.
| Parameter | Impulse One | Zarsthor |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 11 months — better | Every 12 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 301 MB | 48 MB |
| Age rating | 9+ | 12+ |
| Developer | Kurt Dekker | Dominik Babiarz |
In-app purchases
Impulse One
No in-app purchases
Zarsthor
No in-app purchases
