MarimoSimulator vs RobotMania + Physics Sandbox
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
MarimoSimulator
Experience daily relaxation by raising fluffy, cute marimo. Enjoy visual effects by switching lights and soothing music. This simple idle game is perfect for killing time and finding peace.
- Idle marimo breeding
- Relaxing gameplay
- Visual light effects
- Soothing music
- Simple controls
- Tank cleaning mechanic
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Easy Idle Breeding Game with Simple Controls ■ Purpose of the App ■ Experience daily relaxation by raising fluffy and cute marimo. Enjoy interesting visual effects by switching the lights. With beautiful graphics and soothing music that make you feel like you're raising marimo in a tank, forget your daily stress and spend peaceful moments. Unlike raising pets, the breeding elements are simple and easy!! Perfect for killing time! Raise marimo and feel the relaxation in your daily life. ■ How to Care for Marimo ■ Caring for marimo is easy. Clean the tank once every 4 days
RobotMania + Physics Sandbox
Design, program, and play your own games in a creative physics sandbox. Build anything from robots and vehicles to entire worlds and challenges with a powerful yet simple editor. Join a community to discover and share creations.
- Design interactive mini-games and simulations
- Build vehicles, robots, and worlds
- Animate robots with joints and sliders
- Powerful yet simple editor with touch controls
- Discover and play community creations
- Share your own robots and games online
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Build. Play. Destroy. RobotMania is a creative physics sandbox where you can design, program, and play your own games just like in Roblox or Minecraft, but with full physics and complete freedom. It is also inspired by Melon Playground, Algodoo, and Incredibots, combining the best of sandbox creativity and realistic physics. Create anything from robots and vehicles to entire worlds and challenges. The only limit is your imagination. Create Your Own Games * Design interactive mini-games, puzzles, and simulations. * Set custom rules, win conditions, and leaderboards. * Compete in community challenges or make your own worlds for others to play. * Combine creativity, engineering, and logic to become both a player and a game developer. Endless Building Possibilities * Build cars, tanks, airplanes, rockets, and spaceships. * Craft houses, castles, cities, and mechanical creatures. * Add motors, thrusters, and weapons like cannons or lasers. * Animate your robots using joints, sliders, and buttons just like real engineering. Powerful Yet Simple Editor * Draw shapes freely and set physical properties like weight, friction, and bounce. * Connect pieces using rotating or sliding joints for realistic motion. * Scale, rotate, and duplicate parts with intuitive touch controls. * Supports multitouch and both portrait and landscape play. Join a Creative Community * Discover and play thousands of creations from other players. * Share your robots, vehicles, and games online. * Like, comment, and compete on global leaderboards. * Follow your favorite creators and get inspired every day. Whether you love building like in Minecraft, creating games like in Roblox, or experimenting with physics like in Melon Playground, Algodoo, and Incredibots, RobotMania gives you the tools to make anything you imagine, from fun mini-games to advanced mechanical inventions. Download RobotMania today and start creating your own world!
Screenshots
Verdict
The clearest difference is price: MarimoSimulator at Free against RobotMania + Physics Sandbox's $5.99. MarimoSimulator also leads on rating (5.0 vs 4.3) and update cadence (every 3 weeks vs every 6 months). RobotMania + Physics Sandbox's advantage is ads (none vs shown) and review sentiment (100% vs 83%). On 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
MarimoSimulator is free to download; RobotMania + Physics Sandbox costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.
MarimoSimulator holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: RobotMania + Physics Sandbox has 6 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 83% of MarimoSimulator's written reviews are positive against 100% of RobotMania + Physics Sandbox's, so the app with the better star average is not the one people write more warmly about.
MarimoSimulator ships an update every 3 weeks, RobotMania + Physics Sandbox every 6 months. The most recent releases landed on October 12, 2026 and October 17, 2026 respectively.
| Parameter | MarimoSimulator | RobotMania + Physics Sandbox |
|---|---|---|
| Price | Free — better | $5.99 |
| Rating | 5.0 (1 ratings) — better | 4.3 (6 ratings) |
| Positive reviews | 83.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 | 6 — better |
| Update frequency | Every 3 weeks — better | Every 6 months |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 289 MB | 70 MB |
| Age rating | 4+ | +9 |
| Developer | Takuma Takahashi | Simon Zvara |
Customer experience
MarimoSimulator
RobotMania + Physics Sandbox
In-app purchases
MarimoSimulator
No in-app purchases
RobotMania + Physics Sandbox
No in-app purchases
Questions
Is MarimoSimulator free?
Is RobotMania + Physics Sandbox free?
Which has better reviews, MarimoSimulator or RobotMania + Physics Sandbox?
Do MarimoSimulator or RobotMania + Physics Sandbox have ads?
Which is updated more often, MarimoSimulator or RobotMania + Physics Sandbox?
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