Deep Water Mining Factory vs Cross Sum Mania
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Deep Water Mining Factory
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Deep Water Mining Factory is an underwater resource extraction and factory automation game inspired by Factorio. Set on a remote, isolated island in the middle of a vast ocean, players must dig deep underground to discover valuable resources and mine them, even extending their operations down to the ocean floor. Throughout the game, players aim to build their own factory system, automate production lines, and efficiently process and transport resources. The underwater environment presents unique challenges compared to land-based settings. With limited energy resources and a complex marine landscape, players must adopt creative and strategic approaches to mine and process resources effectively. As they dig deeper, they uncover rare materials that enable them to build more advanced machines and equipment. Additionally, interacting with the underwater ecosystem and managing an automated mechanical system are key aspects of the gameplay. Starting with basic tools and resources, players gradually expand their base, constructing intricate machines and conveyor belt systems to fully automate all tasks. The ultimate goal is to build a massive industrial complex deep in the ocean, automating everything from resource extraction to processing and production.
Cross Sum Mania
Solve challenging number puzzles by completing overlapping equations. Use digits 1-9 once per puzzle to fulfill both horizontal and vertical math problems. This free game offers a fun and mentally stimulating experience.
- Overlapping horizontal and vertical equations
- Uses digits 1-9 once per puzzle
- Requires completion of all equations
- Challenging logic gameplay
- Free to play
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A Cross Sum puzzle consists of 6 overlapping equations, 3 horizontal equations and 3 vertical equations. Each equation consists of three digits and two operations. The solution to each equation is given. To solve the puzzle you must complete each equation. The digits 1-9 are used ONLY ONCE in every puzzle. This game is more challenging than you might think. It's fun and it's FREE!
Screenshots
Verdict
The clearest difference is in-app purchases: Cross Sum Mania at none against Deep Water Mining Factory's 1. Cross Sum Mania also leads on ads (none vs shown). Deep Water Mining Factory's advantage is update cadence (every 5 days vs every 3 weeks) and device support (3 vs 1). On price 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. Deep Water Mining Factory sells 1 one-off in-app purchase. Cross Sum Mania asks for nothing beyond the download.
Deep Water Mining Factory ships an update every 5 days, Cross Sum Mania every 3 weeks. The most recent releases landed on October 27, 2026 and October 4, 2026 respectively.
| Parameter | Deep Water Mining Factory | Cross Sum Mania |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 5 days — better | Every 3 weeks |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 231 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Sung Joon Kim | Gilbert Gonsalves |
In-app purchases
Deep Water Mining Factory
- VIP 5 level boost (Qtr 10)$3.99
Cross Sum Mania
No in-app purchases
Questions
Is Deep Water Mining Factory free?
Is Cross Sum Mania free?
Do Deep Water Mining Factory or Cross Sum Mania have ads?
Which is updated more often, Deep Water Mining Factory or Cross Sum Mania?
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