P1 Select vs Sigma Theory
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
P1 Select
Embark on a roguelike adventure through randomly generated levels, battling monsters and collecting magical rings to unlock special attacks. Choose from nine unique heroes and aim for a high score by gathering pyramids. Experience a challenging and strategic gameplay experience.
- Mini roguelike gameplay
- 9 randomly generated levels
- Magical ring power-ups
- Special attack abilities
- 9 playable hero characters
- High score system
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New mini roguelike "broughlike" game. Explore 9 randomly generated levels, avoid fierce monsters, collect magical rings to use your special attack powers, and gather pyramids to reach a high score. Nine different hero characters to choose from! From the creator of Cinco Paus, 868-HACK, Imbroglio, and Zaga-33.
Sigma Theory
Lead a covert agency in a futuristic global cold war. Recruit elite agents, use diplomacy and subterfuge to secure a world-changing scientific discovery for your nation. Engage in turn-based espionage, manage complex relationships, and direct field operations.
- Turn-based espionage gameplay
- Recruit and manage special agents
- Dynamic narrative with over 100 NPCs
- Field operations in global cities
- Diplomacy and subterfuge mechanics
- Futuristic global cold war setting
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Sigma Theory is a Turn-based Strategy game in a futuristic global cold war from the award-winning creators of Out There. Recruit a squad of special agents and run your intel agency to secure the control of the singularity. STORY In the near future, a paradigm-shifting scientific discovery looms over the world, promising radical new technologies. The world’s superpowers realize they could have the power to destroy the global financial system, wipe out entire countries or even gain access to immortality. However, this discovery — called “The Sigma Theory” — can only be harnessed by a handful of scientists. You are placed at the head of your country’s Sigma division. Your objective is to ensure that it is your nation that reaps the benefits of Sigma Theory before anyone else. To achieve this you will have powerful resources at your disposal: a cadre of the world’s most elite covert agents, advanced tactical drones and, of course, your own skills in diplomacy and subterfuge. It’s a cold war out there, one in which mankind must face up to its future. THE ULTIMATE ESPIONAGE SIMULATION Turn-based espionage: Use your special agents to dominate the world. Seduction, blackmail, manipulation, industrial espionage… Every low blow is both permitted and encouraged. Dynamic narrative: Develop and manage your relations with over 100 NPCs: lobbies, armed groups, politicians… Alliance, deception or assassination, you choose. Field operations: Direct the kidnapping of your targets during gripping pursuits through the world’s greatest cities. Discretion or direct confrontation, your agent’s life is in your hands.
Screenshots
Verdict
The clearest difference is in-app purchases: P1 Select at none against Sigma Theory's 7. P1 Select also leads on rating (4.9 vs 4.5) and review sentiment (85% vs 58%). On ads, monetization model 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
P1 Select costs $3.99 and Sigma Theory $6.99 up front. Sigma Theory sells 7 one-off in-app purchases. P1 Select asks for nothing beyond the download.
P1 Select holds the better App Store score, 4.9 against 4.5. That said, the two scores are not equally well evidenced: P1 Select has 50 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 85% of P1 Select's written reviews are positive against 58% of Sigma Theory's.
P1 Select ships an update every 4 days, Sigma Theory fortnightly. The most recent releases landed on October 18, 2026 and October 14, 2026 respectively.
| Parameter | P1 Select | Sigma Theory |
|---|---|---|
| Price | $3.99 — better | $6.99 |
| Rating | 4.9 (50 ratings) — better | 4.5 (8 ratings) |
| Positive reviews | 85.0% of reviews — better | 58.3% of reviews |
| Number of ratings | 50 — better | 8 |
| Update frequency | Every 4 days — better | Fortnightly |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 7.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 5 MB | 388 MB |
| Age rating | 9+ | 4+ |
| Developer | Michael Brough | Plug In Digital |
Customer experience
P1 Select
Sigma Theory
In-app purchases
P1 Select
No in-app purchases
Sigma Theory
- USA Pack$0.99
- China$0.99
- Germany$0.99
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- South Korea$0.99
- Nigeria$0.99
- Brazil$0.99
- Special Offer: All DLCs$3.99









