Comparison

Marimo Merge vs Stock Runner

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

Head to head
About

Marimo Merge

Features
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Marimo Merge is a physics merge puzzle game where you drop cute marimo (green algae balls, moss balls) into an aquarium and combine those with the same numbers to grow them bigger and bigger. The rules are simple, but creating large marimo requires careful thinking, and the satisfying merges and addictive chain reactions give the game surprising depth. ● Basic Rules Tap to drop marimo into the field (aquarium) from above. Before dropping, the marimo automatically moves left and right—tap the screen at the right moment to place it where you want. Each marimo has a random number (1, 3, 9, …). When three marimo with the same number come together, they merge into a larger marimo with a higher value. Repeat this to create bigger marimo and earn points by growing them or reaching target sizes and clearing them from the tank. The game ends when five marimo overflow from the field. ● Special Actions + Hold You can hold one marimo before dropping it. By choosing when and which number to drop, you can avoid creating unnecessary gaps and grow your marimo more efficiently. + Shake After dropping several marimo, you can shake the entire tank. This can send separated marimo flying together or force near-misses to merge—potentially saving you from tricky situations. ● Game Modes + Max 2187 Mode When a marimo reaches 2187, it can be cleared from the tank. Clearing creates space, allowing you to continue merging and score even higher. + Max 6561 Mode The maximum value increases to 6561 (three 2187 marimo merged). Enjoy a more challenging and strategic merge puzzle experience. + Max Unlimited Mode Marimo never disappear, no matter how large they become. See how big you can grow them! ● Rankings Compete with marimo masters around the world for the highest merge points. Aim to become the ultimate marimo master!

About

Stock Runner

Features
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Stock Runner is a fast, stock-market-themed endless runner. The Retail Investor runs on top of a live price chart — the chart is the ground, and you rise and fall with the market. GAMEPLAY - Tap = jump (hold = higher), swipe down = slide - LEAP over red candles - SLIDE under FUD clouds - Grab coins, build your combo up to x5 MARKET MOVERS The President, Fed Chair, Whale and CEO appear — each grants a different power: a combo surge, a shield, a gold rush, or bull mode. BOOSTS & PERKS Shield, Magnet, Bull Mode, Leverage and more — all collected mid-run, so the game never stops. SHIFTING ZONES Green in a bull run, red in a crash — 12 market zones shift color and character. A green candle triggers a RALLY: all coins worth 2x! SHOP Spend what you earn on ties, cases, characters and themes. Can you become the Wall Street Wolf? No internet required. No ads. This is an arcade game played with fictional companies. It contains no real trading, no real money, and no financial advice. All companies are fictional.

Screenshots

Marimo Merge4 screens
Stock Runner4 screens

Verdict

The call

The clearest difference is ads: Stock Runner at none against Marimo Merge's shown. Stock Runner also leads on update cadence (every 3 days vs every 3 months). On price, in-app purchases, 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Marimo Merge ships an update every 3 months, Stock Runner every 3 days. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

Scorecard2 real differences · 4 level
Marimo Merge versus Stock Runner: the parameters behind the verdict, then further details
ParameterMarimo MergeStock Runner
PriceFreeFree
Update frequencyEvery 3 monthsEvery 3 days — better
AdsYesNo — better
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size199 MB2 MB
Age rating4+4+
DeveloperMasaki KannoALI SEVIM

In-app purchases

None

Marimo Merge

No in-app purchases

None

Stock Runner

No in-app purchases

Questions

Is Marimo Merge free?
Marimo Merge is free to download, with no in-app purchases.
Is Stock Runner free?
Stock Runner is free to download, with no in-app purchases.
Do Marimo Merge or Stock Runner have ads?
Marimo Merge shows ads; Stock Runner does not.
Which is updated more often, Marimo Merge or Stock Runner?
Marimo Merge ships an update every 3 months, and Stock Runner every 3 days. Most recently, Marimo Merge was updated on October 26, 2026 and Stock Runner on October 25, 2026.

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