Comparison

Marble Run 2D vs Simon's Bacteria

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

Head to head
About

Marble Run 2D

Design and build your own marble tracks in a 2D environment. Solve engaging puzzles, utilize diverse construction elements, and earn rewards as you create unique gravitational mazes. Immerse yourself in captivating gameplay.

Highlights
  • Create custom marble tracks
  • Solve engaging puzzles
  • Use diverse construction elements
  • Earn bonuses and rewards
  • Immersive 2D gameplay
Read full description

Welcome to the world of Marble Run 2D, where you can create and design your own marble tracks! In this captivating game, you become the architect of your own gravitational mazes, filled with amazing obstacles and thrilling challenges. - Create Your Own Tracks: You are the master builder, bringing your boldest ideas to life by constructing unique marble mazes. - Dive into Engaging Puzzles: Discover the thrill and satisfaction of overcoming various obstacles and solving complex puzzles. - Utilize Diverse Construction Elements: Your imagination knows no bounds! Take advantage of a wide range of elements to create the most intriguing tracks. - Earn Bonuses and Rewards: Successfully completing levels rewards you with unique bonuses and opportunities to enhance your track. - Immerse Yourself in Captivating Gameplay: Enjoy the process of creating and testing marble tracks in an engaging 2D atmosphere. Join the Marble Run 2D community today and immerse yourself in the captivating world of construction and puzzles that will keep you coming back for more! Terms of Use https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy https://patyukgames.blogspot.com/2017/02/normal-0-false-false-false-ru-x-none-x.html

About

Simon's Bacteria

Features
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Simon's Bacteria is a turn-based strategy game built around one deceptively simple mechanic: rotate a stone, and watch the board change. HOW IT WORKS Each stone on the board points in one of four directions. On your turn, rotate one of your stones 90° clockwise — it moves into the cell it now points to, and can trigger a chain reaction of captures across the board. Read the board carefully: a single rotation can flip the momentum of the entire game. PLAY TOGETHER Challenge your friends through Game Center and play together across iPhone, iPad, and Mac. Choose your favorite game mode, compete for victories, unlock achievements, and jump straight into a rematch. Your first 3 multiplayer games are free — after that, a one-time purchase unlocks unlimited multiplayer for good. • Multiplayer across iPhone, iPad, and Mac • Three unique game modes • Game Center achievements and statistics • Quick rematches with friends PLAY YOUR WAY • Chaos Mode — a fully randomized board for a classic, unpredictable game every time. • Symmetry Mode — mirrored starting positions for a perfectly fair fight. • Balanced Mode — randomized but evenly distributed starting directions. THREE LEVELS OF AI (VINTAGE 1998) No neural networks, no cloud, no buzzwords — just an honest, old-school game AI in the spirit of 1998, built on classic move-search logic rather than anything fashionable. It adapts to the difficulty you choose — from a forgiving opponent that favors easy captures, to a sharp one that looks several moves ahead and plans around your counter-attacks. DESIGNED TO GET OUT OF YOUR WAY • Clean, focused board — no clutter, no timers pressuring your every move. • Three visual stone styles to match your taste. • Game Center leaderboards and achievements to track your wins. • Your games and stats are saved locally — pick up right where you left off. • No ads. No account required for single-player. No data collection beyond what Game Center itself handles. FREE TO PLAY, OPEN SOURCE Single-player is completely free, forever, with everything unlocked — it's an open-source passion project. Multiplayer includes 3 free games to try it out, then a small one-time purchase for unlimited play. If you'd like to say thanks separately, optional tips are available in the Tips menu; they simply help cover the cost of the Apple Developer license required to bring an open-source project like this one to the App Store. Whether you have two minutes or twenty, Simon's Bacteria rewards careful thinking over fast reflexes. COMING SOON We're actively working on additional board generation modes and new AI difficulty tiers.

Screenshots

Marble Run 2D4 screens
Simon's Bacteria2 screens

Verdict

The call

The clearest difference is ads: Simon's Bacteria at none against Marble Run 2D's shown. Simon's Bacteria also leads on update cadence (every 11 days vs every 3 months). Marble Run 2D's advantage is iOS requirement (15.0 vs 17.6). On price, in-app purchases and device support 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. Marble Run 2D sells 1 in-app purchase, starting at $4.99 per month and Simon's Bacteria sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Marble Run 2D ships an update every 3 months, Simon's Bacteria every 11 days. The most recent releases landed on October 13, 2026 and September 29, 2026 respectively.

Scorecard3 real differences · 7 level
Marble Run 2D versus Simon's Bacteria: the parameters behind the verdict, then further details
ParameterMarble Run 2DSimon's Bacteria
PriceFreeFree
Rating3.6 (96 ratings) — better—
Positive reviews51.6% of reviews—
Number of ratings96 — better—
Update frequencyEvery 3 monthsEvery 11 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS15.0 — better17.6
Further details — not scored
Size159 MB15 MB
Age rating4+4+
DeveloperDarya VladislavovnaAndrei Kondratev

Bugs and requests

Marble Run 2D

Reported bugs

13 issues
  • Slow loading on second play
  • Gray screen bug
  • Pipes not working anymore (marbles stay on top of holes)
  • Glitch when pressing PRO
  • Marbles fall into the void
Show 8 more
  • Game lags into a grey screen
  • Does not save work
  • Ad with black screen and unclickable 'x' button
  • Marbles teleport under the path when rolling
  • Paid to remove ads, but ads still appear
  • Finish and dominoes are now Pro only
  • Music bug
  • Stuck and out-of-road errors

Requested features

20 requests
  • Add new marbles
  • Add custom marbles
  • Add custom tracks
  • Add moving objects
  • Add a new funnel
Show 15 more
  • Make it 3D
  • Add a part where marbles finish a stage and one is eliminated
  • Add a trampoline block
  • Make features available for everyone
  • Customizable teleporters
  • Longer blocks
  • More marbles with custom pictures
  • Add vehicles (cars, planes, helicopters)
  • Add a conveyor in mechanisms
  • Choice for marble size
  • Add a parachute
  • Add a lure that spawns marbles when one dies
  • Add editor for marbles
  • Bring back old marbles
  • Fix stuck and out-of-road errors

Simon's Bacteria

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Marble Run 2D

Subscriptions1
  • PRO User Subscription.$4.991 Month
3 purchases

Simon's Bacteria

One-time3
  • Small Tip$0.99
  • Medium Tip$2.99
  • Large Tip$4.99

Questions

Is Marble Run 2D free?
Marble Run 2D is free to download, with in-app purchases available.
Is Simon's Bacteria free?
Simon's Bacteria is free to download, with in-app purchases available.
Do Marble Run 2D or Simon's Bacteria have ads?
Marble Run 2D shows ads; Simon's Bacteria does not.
Which is updated more often, Marble Run 2D or Simon's Bacteria?
Marble Run 2D ships an update every 3 months, and Simon's Bacteria every 11 days. Most recently, Marble Run 2D was updated on October 13, 2026 and Simon's Bacteria on September 29, 2026.

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