Space Travel
Jump Between Planets
An orbital physics game where you control a spaceship navigating between planets through gravitational orbits. Complete missions, earn stars and climb the global leaderboard!
Space Travel is on Google Play, free. You can also play straight in your browser, with nothing to install. The iPhone version has not been released yet.
What's New
What changed in the latest updates shipped to Google Play.
One switch hides name and photo together, and it reaches what was already published — not just future runs.
From 30 to 95 fps on a Motorola Edge 60 Neo, and 120 Hz unlocked on panels that support it.
Day/night terminator and rim light, with the light fixed in world space. No longer flat circles.
Reorganized around the buyer, with the sector reward findable and a path to the coin store.
Architecture & Technology
A cross-platform mobile project built with modern technologies and professional architecture.
Main Stack
- React 18 + TypeScript 5 (strict mode)
- Capacitor 8 — Android 16 (target API 36); iOS in preparation
- Vite 6 + a custom 2D Canvas orbital physics engine, no third-party game engine
- Firebase — Auth, Firestore, Remote Config, Analytics and Crashlytics
- Environments: Complete separation between production and staging — builds, Firebase project, icons and signing key
- Quality gate: 9 mandatory steps, including five validators written for this project
Game System
- Procedural Generation: Infinite levels from a deterministic seed — every player faces exactly the same level, with nothing stored
- Orbital Physics: Geometric calculations for arcade-style gravity and trajectories
- 25-level sectors: Moons, comets, black holes, portals and orbiting systems arrive as you progress, each with its own tutorial
- Star System: 3 per mission — finish it, take no hit, and beat the target time
- Energy System: Regenerating missions with a cooldown, tunable remotely without a store release
Hybrid Persistence
- Online: Firestore as the cloud copy of the profile
- Offline: Capacitor Preferences on the device — the game is fully playable with no internet
- Profiles: Anonymous and Google login, with automatic data migration after authentication
- Sync queue: Every offline operation is enqueued under a lock and drained on reconnect
- Reconciled by join, not by clock: Records by maximum, best times by minimum. Progress never goes backwards, and the queue can drain in any order or replay with no effect
- Per-account isolation: The queue is bound to its owner, so one session's data never lands in another account
Leaderboards
- Global: Worldwide top 100, with its own weekly ranking
- Regional: Top 50 by country and by state, via device geolocation
- Per mission: Best times for each level
- Privacy honoured: Players who hide their name stay in the ranking, anonymised
- Cached, deduplicated reads: Keeps usage inside the Firestore quota, with a per-player cache key
Mobile Features
- Push Notifications: FCM for the daily reward and events, in the player's own language
- AdMob: Rewarded ads for coins, with a cooldown floor the remote panel cannot undercut
- In-App Purchases: RevenueCat on top of Google Play Billing 8
- Analytics: Firebase Analytics on the native stream + Crashlytics
- Remote Config: Economy, difficulty and energy tunable without going through the store
Performance & UX
- High Performance: Canvas 2D rendering (60–120+ FPS depending on device), with a low-power mode
- Edge-to-edge: Layout adapted to Android 16, with safe areas handled for notch, island and gesture bar
- i18n: 4 languages (PT/EN/ES/FR), 378 strings each, verified in the quality gate
- Accessibility: Per-mechanic tutorials, and the system's reduced-motion preference is honoured
Customization
- 13 ship shapes and 9 colour schemes
- 9 trails, each with its own particle system
- 41 planet themes and 18 star fields, swapping as you cross sectors
- Milestone reward: Clearing sector 1 grants a ship, so players live the swap before they ever buy one
In Development
The Xcode project is already in the repository. App Store release has no date yet — which is why the button above is disabled.
Automatic deployment via Bitbucket Pipelines
More variety in high-level generation, where the difficulty curve currently plateaus
Project Statistics
Alongside the public release, we keep a separate app on a closed test track, where new features land first. It installs side by side with the normal game and does not touch your progress. To join:
⚠️ Important:
You need to join the Google Group so the Google Play Console recognises you as an authorised tester. Without it, the link below answers as if the app did not exist — that is not an error, it is how Play behaves for anyone off the list.
- Join the testers group: Join the group
- Wait for approval in the group (usually a few minutes)
- Open the button below signed in with the same email you used for the group
- Install and start playing!
- Send your feedback to [email protected]
