Alien Shooter 2 vs ATOM
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Alien Shooter 2
Engage in explosive alien-blasting action in this sequel to a legendary shooter. Unravel a corporate mystery, battle for humanity's survival, and compete with players worldwide in multiplayer mode. Upgrade your hero and arsenal for intense combat.
- Campaign mode with hours of gameplay
- Online multiplayer battles
- Character and weapon upgrades
- Hundreds of weapon types
- Combat drones and equipment
- Persistent enemy corpses
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The second installment of the legendary Alien Shooter is now available on your iPhone and iPad for free! Try and you will be pulled into the heat of explosive action, along with millions of players all around the world! This gameplay has united almost all installments of the series. You are to unravel the mystery from the very beginning - the emergence of monsters inside the MAGMA corporation’s secret base and join in a world-wide battle for the survival of mankind. With the help of long-familiar characters - General Baker, engineer Nicholas, a genius professor and, of course, Kate Lia - our hero’s companion over the years. But most importantly, by popular demand from our players, the game now has a multiplayer. Upgrade your hero, upgrade your weapon and test your skill, competing with players worldwide! What you get: Hours of gameplay in the campaign mode Lots of maps for online battles A possibility to enhance and equip your character according to your play style Hundreds of weapons - from pistols to plasma guns Combat drones, grenades, first-aid kits, implants and many other As for the best part, it’s a Sigma Team game: - Monsters swarming the screen! - The enemy corpses do not disappear - see the work done after beating a level!
ATOM
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Build. Merge. Discover. ATOM turns the periodic table into a satisfying puzzle. Drop glowing elements into the chamber, bring matching atoms together, and watch them merge into something new. Every move brings you closer to your next discovery. Start with familiar elements like Hydrogen and Helium. As your collection grows, new combinations become possible—and keeping the chamber under control becomes its own challenge. Plan your drops, chase a new personal best, and see how far you can go. DISCOVER THE ELEMENTS Unlock elements across the periodic table and track your progress in a collection of all 118. LEARN AS YOU PLAY Tap an element you’ve discovered to explore its story and surprising facts about the world around you. FIND YOUR FLOW Enjoy colorful reactions, responsive sound, and a clean, dark design that keeps the focus on every drop and merge. PLAY YOUR WAY Take a quick break or settle in for a longer session. ATOM works offline, requires no account, and saves your progress on your device. How much of the periodic table can you build?
Screenshots
Verdict
The clearest difference is price: Alien Shooter 2 at Free against ATOM's $0.99. ATOM's advantage is in-app purchases (none vs 10) and ads (none vs shown). On device support and iOS requirement 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
Alien Shooter 2 is free to download; ATOM costs $0.99 up front. Alien Shooter 2 sells 10 one-off in-app purchases. ATOM asks for nothing beyond the download.
| Parameter | Alien Shooter 2 | ATOM |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 4.6 (776 ratings) — better | — |
| Positive reviews | 76.8% of reviews | — |
| Number of ratings | 776 — better | — |
| Update frequency | Every 3 months | — |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 528 MB | 32 MB |
| Age rating | 17+ | 4+ |
| Developer | SIGMA TEAM COMPANY LIMITED | Vishavjeet Sharma |
Bugs and requests
Alien Shooter 2
Reported bugs
3 issues- Mission 25 bug makes level unbeatable
- Ad-related screen freezes
- Disappearing health, grenades, and revives
Requested features
4 requests- Add co-op multiplayer mode
- Improve character customization
- Optimize performance and stability
- Reduce in-app purchase requirements
ATOM
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Alien Shooter 2
- The adventure begins$1.99
- Special supply$2.99
- MAGMA’s reserves$4.99
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- Mercenary’s royalty$4.99
- “Die, aliens” set$8.99
- Cutthroat’s profit$8.99
- Military trophies$8.99
- Alien hunter’s capital$17.99
- Nice loot$17.99
- General’s income$26.99
ATOM
No in-app purchases









