# Space Crash Simulator — SPH Planet Collisions > Physics-based Smoothed Particle Hydrodynamics simulation of planetary collisions. (iPhone/iPad app by WPC.) - Source: https://appshunter.io/ios/app/space-crash-simulator/id6742357679 (this page in markdown: same URL + `.md`) - Developer: [WPC](https://appshunter.io/developer/1681830786) - Category: Games, Education, Casual, Simulation - Price: Free with in-app purchases - Rating: 4.50/5 from 504 App Store ratings · 219 written reviews indexed - Age rating: 4+ - Requires: iOS 15.0 · 165 MB - Languages: American English - Released: 2025-02-23 - Data updated: 2026-08-27 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/space-crash-simulator/id6742357679/reviews.md ## What is Space Crash Simulator? Smash worlds together and watch them shatter, merge, and melt, driven by real physics, not pre-made animations. Every planet is made of thousands of interacting particles, so every collision is computed live and no two impacts ever look the same. Build your own scenario in Setup Mode: place up to 8 bodies, set their size, density, spin and velocity, then let gravity do the rest. Or dive straight into a head-on collision and watch the debris glow, cool, and form a crust. - True particle physics (SPH), the first of its kind on mobile - Molten impact zones: heat, lava, and cooling crusts - Give planets rings or shred a moon into one with tidal forces (Roche limit) - Protoplanetary disk and colliding-galaxies modes - Black holes that tear planets apart - Custom planet textures from your own photos - Runs on everything: tune particle count, accuracy, and timescale to your device ## Key features - Smoothed Particle Hydrodynamics (SPH) simulation - Real-time planetary collisions - Customizable simulation parameters - Setup Mode for scenario creation - Adjustable particle count and accuracy - Physics-based detailed simulation ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | No-Ads | $4.99 | one-time | ## What do users think of Space Crash Simulator? Overall sentiment: positive **Pros** - 👍 Great game - 🚀 Awesome graphics - 💡 Interesting simulation features - 🎉 Fun and enjoyable **Cons** - 🐛 Occasional performance issues - 💰 Too many ads **Commonly reported bugs** - Collision trails not clearing properly - Protoplanetary disc mode not working as expected **Most requested features** - Add more celestial objects (black holes, stars, etc.) - Allow for custom textures and planet/atmosphere customization - Improve performance and optimization - Add more graphic options and settings - Allow for custom rings and moons around planets - Enable free camera feature - Improve collision and heating effects ## Recent user reviews (10 of 219) All indexed reviews: https://appshunter.io/ios/app/space-crash-simulator/id6742357679/reviews.md ### 5/5 — Very good app! But…. *2026-08-20, version 0.67* tbh I recommend this app a lot lol its really fun and possibly even addicting! Maybe add a ability to add more stars in Protoplanetary disc so you can see what’s protoplanetry disc merger looks like but add the ability to to change the stars colours! (Green. Blue. White. Red. Purple.) and make it so you can spawb a lot! (Max: 8) I hope you add this but it’s fine if you don’t want to! ### 5/5 — AMAZING! *2026-08-16* So I saw this app on yt, I thought it wouldn’t run well on my phone. Turns out, it does!! And the new update is AWESOME!! The graphics are amazing, I love how you can watch what you did, and more!! I definitely recommend this for anyone. ### 5/5 — Update Is Good *2026-08-15, version 0.65* DONE TEMU MOON BLENDING EARTH ### 5/5 — Uhh, think you went full-on god mode 😭 *2026-08-07, version 0.61* Best thing ever, like, it’s literally space sim or whatever it was but for mobile and for free. Currently the best game on my iPad. All I need is Solar system sim thing you made and then my iPad will be like: “I’m the best device in the house😭😭😭😭😭😭😭😭😭😭. bruh.” TYSM FOR MAKING THIS FREE!!!!!!!!!!!!!!!!!!!!!!!!!!! ### 5/5 — This is great *2026-08-04, version 0.61* This is a fun game, but you can smash every planet. It’s OK have fun. ### 3/5 — Very laggy and low fps *2026-08-01, version 0.61* This would be a 5-star review but is its very laggy and low fps so please make the limit of fps higher then 30 bro🙏 ### 5/5 — Amazing update! *2026-07-25, version 0.61* Amazing graphics! Fun Way more ways to simulate custom planets and systems. ### 1/5 — The game won’t play *2026-07-25, version 0.61* The game won’t play for some reason I think it’s bugged. The simulation won’t play. ### 4/5 — Galaxy’s *2026-07-23, version 0.61* Please make it so the galaxies can like forge together instead of just orbiting each other for an infinite amount of time and also add different types of galaxies like elliptical instead of only spirals ### 2/5 — Galaxys mode glitch the game for some reason *2026-07-22, version 0.61* when playing galaxys mode it sometimes make me can’t move the camera unless i close and open the app fix this bug now please that’s why I rated it 2 stars ## Frequently asked questions about Space Crash Simulator ### What is Space Crash Simulator? Space Crash Simulator is a mobile application that uses Smoothed Particle Hydrodynamics (SPH) to simulate planetary collisions in real time. It allows users to witness and create detailed, physics-based cosmic events. ### What are the key features of this app? Key features include a robust SPH simulation engine for realistic planet collisions, a Setup Mode for customizing initial conditions like particle count and velocity, and adjustable settings to optimize performance on various devices. ### Is Space Crash Simulator free to download? Yes, the app is free to download and offers in-app purchases. It also includes advertisements. ### Can I adjust the simulation settings? Yes, you can customize initial conditions in Setup Mode. This includes adjusting parameters such as particle count, planet velocity, and collision accuracy to create your own unique collision scenarios. ### What kind of devices can run this simulation? The app is designed to be accessible on a range of devices. Settings like particle count, accuracy, and timescale can be adjusted to allow even less powerful devices to run the simulation effectively. ## Version history (last 5 releases) ### 0.68 — 2026-08-20 BIG update! - Big optimization allowing for much higher particle counts - Reduced initial planet wobble - New shapes: cube, wall and disk alongside spheres - Indestructible bodies: shapes keep their shape no matter what - Improved Compute and Replay, you can now record much longer and more stable - Many new planet textures - Save and load setups, with thumbnails - Black hole fix + added accretion disk, rings fix - Shadows: real-time shadows with three quality levels (Off / Basic / Advanced). Advanced cast and receive shadows per particle. - GPU rendering: planets now have correct depth and occlusion ### 0.67 — 2026-08-17 BIG update! - Improved Compute and Replay, you can now record much longer and more stable - Many new planet textures - New shapes: cube, wall and disc alongside spheres - Indestructible bodies: shapes keep their shape no matter what if you want them to. - Save and load setups, with thumbnails. - Black hole fix, rings fix - Shadows: real-time shadows with three quality levels (Off / Basic / Advanced). Advanced cast and receive shadows per particle. - GPU rendering: planets now have correct depth and occlusion. ### 0.66 — 2026-08-16 BIG update! - Many new planet textures - New shapes: cube, wall and disc alongside spheres - Indestructible bodies: shapes keep their shape no matter what if you want them to. - Save and load setups, with thumbnails. - Black hole fix, rings fix - Shadows: real-time shadows with three quality levels (Off / Basic / Advanced). Advanced cast and receive shadows per particle. - GPU rendering: planets now have correct depth and occlusion. ### 0.65 — 2026-08-15 BIG update! - Many new planet textures - New shapes: cube, wall and disc alongside spheres - Indestructible bodies: shapes keep their shape no matter what if you want them to. - Save and load setups, with thumbnails. - Shadows: real-time shadows with three quality levels (Off / Basic / Advanced). Advanced casts and receives shadows per particle. - GPU rendering: planets now have correct depth and occlusion. ### 0.61 — 2026-07-12 • NEW: Added Compute function for smooth replay (including rewind and slow-motion) on weak devices • NEW: Planetary rings! Give any planet a ring in Setup Mode — tilt it, resize it, watch it orbit, catch the planet's shadow, and rain glowing debris onto the surface. Or shred a moon into a ring with the tidal break-up action. • New Extras menu in setup (rings & orbit helpers) • Enter values directly without sliders • Graphics improvements ## Apps similar to Space Crash Simulator | App | Rating | Price | Category | | --- | --- | --- | --- | | [Solar Smash 2D: Space Game](https://appshunter.io/ios/app/solar-smash-2d-space-game/id1622164579) | 4.7 (13,422) | Free | Games | | [Flight Simulator 2d](https://appshunter.io/ios/app/flight-simulator-2d/id1540648589) | 4.7 (3,733) | Free | Games | | [Earth Editor](https://appshunter.io/ios/app/earth-editor/id968975804) | 4.3 (919) | Free | Games | | [Galaxy Space Simulator 3D](https://appshunter.io/ios/app/galaxy-space-simulator-3d/id1236414128) | 4.4 (457) | Free | Games | | [Planet simulation](https://appshunter.io/ios/app/planet-simulation/id356146219) | 3.9 (164) | Free | Games | | [Water Box: Physics Sandbox](https://appshunter.io/ios/app/water-box-physics-sandbox/id6741103044) | 4.8 (1,515) | Free | Games | ## More apps by WPC - [Solar System Sim](https://appshunter.io/ios/app/solar-system-sim/id6447612221) - [星系模拟器](https://appshunter.io/ios/app/id6450872508) - [Ship Maneuvering Simulator](https://appshunter.io/ios/app/ship-maneuvering-simulator/id6475722175) All apps by WPC: https://appshunter.io/developer/1681830786 ## Related topics [space crash simulator](https://appshunter.io/ios/topics/space-crash-simulator) · [realistic space games](https://appshunter.io/ios/topics/realistic-space-games) · [space simulation](https://appshunter.io/ios/topics/space-simulation) · [space simulation toolkit](https://appshunter.io/ios/topics/space-simulation-toolkit) · [solar system simulator](https://appshunter.io/ios/topics/solar-system-simulator) · [space simulator games](https://appshunter.io/ios/topics/space-simulator-games) · [solar system sim](https://appshunter.io/ios/topics/solar-system-sim) · [space sims](https://appshunter.io/ios/topics/space-sims) · [solar system games](https://appshunter.io/ios/topics/solar-system-games) · [space sandbox](https://appshunter.io/ios/topics/space-sandbox) · [universe sandbox](https://appshunter.io/ios/topics/universe-sandbox) · [spacecraft simulator](https://appshunter.io/ios/topics/spacecraft-simulator) · [universe simulator](https://appshunter.io/ios/topics/universe-simulator) · [space flight simulator mods](https://appshunter.io/ios/topics/space-flight-simulator-mods) · [planet simulator](https://appshunter.io/ios/topics/planet-simulator) · [black hole simulator](https://appshunter.io/ios/topics/black-hole-simulator) · [solar system sandbox](https://appshunter.io/ios/topics/solar-system-sandbox) · [stars and planets simulator](https://appshunter.io/ios/topics/stars-and-planets-simulator) · [starfront collision](https://appshunter.io/ios/topics/starfront-collision) · [space simulator](https://appshunter.io/ios/topics/space-simulator) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-27.*