Comparison

20000 Cogs under the Sea vs Upload Simulator 2

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

20000 Cogs under the Sea

Build an underwater steampunk factory, connecting cogwheels for efficient idle gameplay. Explore the seabed, manage unique creatures, and upgrade contraptions to become a sea tycoon. This incremental game features offline play and rewarded ads.

Highlights
  • Build and expand underwater factories
  • Connect cogwheels for efficient production
  • Idle gameplay with offline progress
  • Discover and upgrade mad science contraptions
  • Employ unique sea creatures and machines
  • Explore and expand playable area
Features
Read full description

Start your awesome underwater steampunk adventure. Build underwater factory, connect the cogwheels for the most efficient work in the idle game mode. Tap volcanoes for oxygen, drill the seabed and mine the ore. Employ octopuses and whales, explore the world with mechanical crabs, fish and submarines! Even the squirrels will help you, if you supply them with oxygen. Upgrade your incredible contraptions to become the ultimate sea tycoon. Features of this addictive incremental idle game - Various mad science contraptions, which can be connected in multiple fun ways - You start in a small research station at the bottom of an ocean, but then you expand down, up, left and right - Tutorial gives you the basic concepts, but to ultimately succeed you must be a real researcher and uncover hidden gameplay mechanics - Engines will work while you are away, producing you idle cash - Big community in facebook: share your creation to 7500 group members - Contains only rewarded ads, which are launched by the player to increase earnings - Works in offline mode without internet connection - Receive your daily reward by catching a FB submarine This is the fifth, Underwater, world of Steampunk Idle Spinner series. The first version of idle game with spinning cogwheels was made in June 2017 during a 3-days gamejam. As the concept proved to be interesting for the players, the development continued. The development of the game is screencast and then published as 1:60 timelapse video. Some development phases are broadcast to the players as live videos and often the players' suggestions are implemented online. The Underwater world was the most demanded, according to the players' vote in the game's facebook group. This world introduces many new concepts unique to the series. They are: - Reworked game engine with "pins" concept, which let design even the most bizarre machines interactions; - Resources production chains. Money is produced from air, various gases can be combined to create new substances; - Playable area expansion. Sideways expansion is performed with clockwork crabs and submarines, upwards expansion: with main base upgrades and downwards: by drilling the seabed; - Wide usage of taps together with spins for interaction with machines; - New objects are not only bought, but also discovered (treasure chests, more underwater volcanoes, ore deposits); - Machines purchase interface is the most convenient here. Players continue giving new suggestions, which eventually appear in the game. Available machines and entities: - Underwater volcano - produces oxygen or other gases - Cog 2:1 - increases rotating speed - Hammer - automatically hits the attached machines - Clockwork engine - spins the cog it while you are away - Tap accumulator - stores your taps and transmits them to the coins - Bubble duplicator - duplicates the bubbles - Clockwork crab - discovers new territories for you - Drill - as you spin it, drills down, finds the deposits of ore and produces coins - Mechanical fish - transports resources to your base - Octopus - extracts tentacles and spins cogs - Air pipe - transports air - Whale attractor - emits infrasound, which attracts whales - Squirrel wheel - powerful engine, when fed with air bubbles - Water filter - filters gold from the water - Gas mixer - mixes air with the red gas and produces green gas - Base booster - gathers red or green gas and boosts your base - Treasure lootbox - you'll find it occasionally on a seabed. Tap it do get some gold - Submarines factory - floats in the water, as you spin its cog, will produce Scout submarines - Scout submarine - expands your visible aquatory

About

Upload Simulator 2

Simulate the process of uploading data to earn credits, upgrade your hardware, and research new technologies. Discover unique artifacts, craft modules, and customize your operating system with themes and wallpapers.

Highlights
  • GPU mining for credits
  • Upgrade hardware setup
  • Research new technologies
  • Craft modules
  • Customize OS with themes
  • Discover unique artifacts
Features
Read full description

Use your powerful GPU to mine credits and upgrade your setup even further! Get unique upgrades using your hard-gained reputation as an uploader! Use your uploaded data into the laboratory to research amazing new tech and boost your setup even more! Hack into the system and speed up your game with different abilities! Choose the format of your uploads for different outcomes! Find unique artifacts that grant you with different bonus effects! Collect resources to craft modules and modify your system! And customize your OS with different themes or even with the wallpaper of your choice!

Screenshots

20000 Cogs under the Sea4 screens
Upload Simulator 24 screens

Verdict

The call

The clearest difference is price: 20000 Cogs under the Sea at Free against Upload Simulator 2's $3.99. 20000 Cogs under the Sea also leads on rating (4.9 vs 4.4) and review sentiment (100% vs 80%). Upload Simulator 2's advantage is in-app purchases (none vs 6) and ads (none vs shown). On ratings volume, 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

CostPrice · In-app purchases · Ads · Monetization

20000 Cogs under the Sea is free to download; Upload Simulator 2 costs $3.99 up front. 20000 Cogs under the Sea sells 6 one-off in-app purchases. Upload Simulator 2 asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

20000 Cogs under the Sea holds the better App Store score, 4.9 against 4.4. Both are backed by a comparable volume of ratings — 21 and 18 respectively. Written reviews point the same way: 100% of 20000 Cogs under the Sea's written reviews are positive against 80% of Upload Simulator 2's.

UpkeepUpdate frequency

20000 Cogs under the Sea ships an update fortnightly, Upload Simulator 2 every 2 days. The most recent releases landed on November 2, 2026 and November 8, 2026 respectively.

Scorecard7 real differences · 3 level
20000 Cogs under the Sea versus Upload Simulator 2: the parameters behind the verdict, then further details
Parameter20000 Cogs under the SeaUpload Simulator 2
PriceFree — better$3.99
Rating4.9 (21 ratings) — better4.4 (18 ratings)
Positive reviews100.0% of reviews — better80.0% of reviews
Number of ratings21 — better18
Update frequencyFortnightlyEvery 2 days — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better12.0
Further details — not scored
Size33 MB125 MB
Age rating4+4+
DeveloperAlexey IzvalovEnigmaDev Studios

Customer experience

20000 Cogs under the Sea

All ratings20 ratings
Positive95.0%
Neutral5.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Upload Simulator 2

All ratings18 ratings
Positive83.3%
Neutral5.6%
Negative11.1%
Written reviews10 reviews
Positive80.0%
Neutral10.0%
Negative10.0%

In-app purchases

6 purchases

20000 Cogs under the Sea

One-time6
  • Hammer power x2$1.99
  • Exploration speed x2$2.99
  • No Ads + everything 2x cheaper$2.99
Show 3 more
  • Coins production x2$4.99
  • Volcano efficiency x2$5.99
  • Narrativium generation x2$9.99
None

Upload Simulator 2

No in-app purchases

Questions

Is 20000 Cogs under the Sea free?
20000 Cogs under the Sea is free to download, with in-app purchases available.
Is Upload Simulator 2 free?
Upload Simulator 2 costs $3.99, with no in-app purchases.
Which has better reviews, 20000 Cogs under the Sea or Upload Simulator 2?
20000 Cogs under the Sea is rated higher. 20000 Cogs under the Sea averages 4.9 out of 5 from 21 ratings, while Upload Simulator 2 averages 4.4 from 18 ratings.
Do 20000 Cogs under the Sea or Upload Simulator 2 have ads?
20000 Cogs under the Sea shows ads; Upload Simulator 2 does not.
Which is updated more often, 20000 Cogs under the Sea or Upload Simulator 2?
20000 Cogs under the Sea ships an update fortnightly, and Upload Simulator 2 every 2 days. Most recently, 20000 Cogs under the Sea was updated on November 2, 2026 and Upload Simulator 2 on November 8, 2026.

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