Comparison

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.

Head to head
About

Deep Water Mining Factory

Features
Read full description

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.

About

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.

Highlights
  • Overlapping horizontal and vertical equations
  • Uses digits 1-9 once per puzzle
  • Requires completion of all equations
  • Challenging logic gameplay
  • Free to play
Features
Read full description

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

Deep Water Mining Factory4 screens
Cross Sum Mania2 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard5 real differences · 4 level
Deep Water Mining Factory versus Cross Sum Mania: the parameters behind the verdict, then further details
ParameterDeep Water Mining FactoryCross Sum Mania
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 5 days — betterEvery 3 weeks
AdsYesNo — better
In-app purchasesYesNo — better
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.0 — better16.0
Further details — not scored
Size231 MB4 MB
Age rating4+4+
DeveloperSung Joon KimGilbert Gonsalves

In-app purchases

1 purchases

Deep Water Mining Factory

One-time1
  • VIP 5 level boost (Qtr 10)$3.99
None

Cross Sum Mania

No in-app purchases

Questions

Is Deep Water Mining Factory free?
Deep Water Mining Factory is free to download, with in-app purchases available.
Is Cross Sum Mania free?
Cross Sum Mania is free to download, with no in-app purchases.
Do Deep Water Mining Factory or Cross Sum Mania have ads?
Deep Water Mining Factory shows ads; Cross Sum Mania does not.
Which is updated more often, Deep Water Mining Factory or Cross Sum Mania?
Deep Water Mining Factory ships an update every 5 days, and Cross Sum Mania every 3 weeks. Most recently, Deep Water Mining Factory was updated on October 27, 2026 and Cross Sum Mania on October 4, 2026.

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