Comparison

Sea Crab.io vs Bottomless

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

Head to head
About

Sea Crab.io

Embark on an epic underwater journey as a crab, evolving and customizing your species to conquer the sea. Devour everything in your path, defeat formidable foes like sharks and megalodons, and rise to become the ultimate ruler of the ocean empire.

Highlights
  • Collect and upgrade crab species
  • Customize your crab
  • Battle giant sea creatures
  • Single-player open-world RPG
  • Explore a vast underwater environment
  • Evolve your crab
Features
Read full description

You are not just a King. You are an Emperor of the Sea. A King rules one state. An Emperor rules over many kings. Start your underwater journey as a humble crab and rise through the ranks until the entire ocean bows before you. Collect and Customize Discover dozens of weird and wonderful crab species. Upgrade their abilities and customize their look to dominate every battle. Face Epic Predators Megalodon, hungry sharks, giant crocodiles, and rival crab kings all stand between you and total ocean supremacy. Eat them or be eaten. Survive and Evolve Grow bigger and stronger with every enemy you devour. Evolve into an unstoppable sea monster and climb the food chain. Explore a Massive Underwater World Dive into a huge open-world environment. Discover hidden zones, face terrifying hybrid creatures like the Shark T-Rex, and uncover secrets of the deep. Ultimate Power Fantasy Sea Crab.io is a single-player, open-world action RPG where YOU are the predator. No mercy. No limits. Eat! Explore! Evolve! Rule!

About

Bottomless

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One summer dive. One enormous wave. One very missing swimsuit. In Bottomless, a boy searches the ocean for his lost trunks—and finds just about everything else. Tap left and right to swim through bright reefs, sunken wrecks and the midnight trench. Keep your rhythm, watch your air and decide when a risky detour is worth it. ADVENTURE: GO DEEPER, ONE DIVE AT A TIME Every attempt starts at the surface. Keep the salvage you collect, even when your dive ends, and spend it on more breath, stronger strokes and tighter turns. Buy permanent flashlight upgrades to see farther into the dark. CASUAL: A FRESH BUILD EVERY DIVE Start with 60 seconds of air. Discover equipment to refill your breath and improve your swimming for this run. Walls bounce you back, obstacles cost air, and creatures end the dive. Keep your coins for a separate cosmetic swimwear collection. AN OCEAN WITH A MIND OF ITS OWN Weave past swimming fish, pulsing jellyfish, lunging eels and hungry sharks. Fish can slow you down, stings burn through your air and a shark can end your dive. Optional air pearls, slipstreams and shields can turn a good attempt into a new best. FIND EVERYTHING EXCEPT YOUR TRUNKS Recover 24 absurd artifacts, including an antique toaster, a mossy bowling ball and a microwave that somehow still works. Treasure milestones are claimed once: your next dive must go farther to find the next one. Discoveries do not refill your oxygen. A LITTLE MORE DIGNITY Choose a cardboard box, flamingo float, wooden barrel or kelp skirt. Outfits change your look, never your swimming stats. The character is always covered by bubbles or an outfit. SIXTY REASONS TO KEEP DIVING Earn permanent medals for discoveries, skill and depth records—including comparisons with famous towers, lakes and the Titanic wreck. Tap any medal to see its challenge and progress. • Two-thumb momentum swimming made for portrait play. • Four illustrated ocean layers and a chibi cartoon cast. • A comic opening for new adventures; Continue gets you straight back to diving. • Offline gameplay and local progression, with no account required. • Separate music, sound, vibration, reduced-motion and discovery-animation settings. ADS AND AD-FREE Adventure offers optional ads to double the coins from a completed dive. After three completed Adventure dives without seeing an ad, a run-end ad appears when available. Casual also has run-end ads. The permanent Ad-Free Salvage purchase removes ads in both modes and automatically doubles Adventure coins, even offline. It does not multiply Casual coins, and bonuses never stack. Unavailable ads never block another dive. Progress is stored on your device. There is no cloud save or online ranking. Store purchases and rewarded ads need an internet connection.

Screenshots

Sea Crab.io4 screens
Bottomless4 screens

Verdict

The call

The clearest difference is in-app purchases: Sea Crab.io at none against Bottomless's 1. Sea Crab.io also leads on device support (3 vs 1). Bottomless's advantage is update cadence (daily vs every 12 months). On price, ads 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

Both are free to download. Bottomless sells 1 one-off in-app purchase. Sea Crab.io asks for nothing beyond the download.

UpkeepUpdate frequency

Sea Crab.io ships an update every 12 months, Bottomless daily. The most recent releases landed on November 4, 2026 and November 6, 2026 respectively.

Scorecard3 real differences · 6 level
Sea Crab.io versus Bottomless: the parameters behind the verdict, then further details
ParameterSea Crab.ioBottomless
PriceFreeFree
Rating4.5 (4 ratings) — better—
Number of ratings4 — better—
Update frequencyEvery 12 monthsDaily — better
AdsYesYes
In-app purchasesNo — betterYes
MonetizationAd-supported—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better16.0
Further details — not scored
Size147 MB121 MB
Age rating9+12+
DeveloperMuhammad ShahbazTiago Massita da Fonseca

In-app purchases

None

Sea Crab.io

No in-app purchases

1 purchases

Bottomless

One-time1
  • Ad-Free Salvage$2.99

Questions

Is Sea Crab.io free?
Sea Crab.io is free to download, with no in-app purchases.
Is Bottomless free?
Bottomless is free to download, with in-app purchases available.
Do Sea Crab.io or Bottomless have ads?
Both Sea Crab.io and Bottomless show ads.
Which is updated more often, Sea Crab.io or Bottomless?
Sea Crab.io ships an update every 12 months, and Bottomless daily. Most recently, Sea Crab.io was updated on November 4, 2026 and Bottomless on November 6, 2026.

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