Trajectory Football
One ball. Two minds. No luck.
Only for iPhone
Free
iPhone
Trajectory Football is a quiet turn-based strategy game played on a grid of intersections. Two players share control of a single ball, and every line you draw is consumed forever. There is no luck, no dice, no timer pressure — just the trail you have drawn so far and the player smart enough to read it.
HOW IT PLAYS
The ball lives on intersections, never inside cells. On your turn, send it one step in any of the eight surrounding directions. If you land on a fresh intersection, your turn ends. If you land on one that's already been visited (or on a wall), you bounce — and must keep moving. A single bounce chain can carry the ball halfway across the board in one turn. Score in the opposite goal to win. Trapping your opponent in a dead end is also a fully legal win.
WHAT MAKES IT DIFFERENT
- Shared-ball duel. Both players control the same ball — strategy is about reading the same evolving trail, not racing on parallel tracks.
- Bounce chains. Visited intersections force continued movement. Setting up a long chain that scores is the most satisfying move in the game.
- Three boards. Easy 5×7, Standard 7×9, Hard 9×11. Larger boards reward looking further ahead.
- Three AI difficulties. The opponent runs a local minimax search with alpha-beta pruning. Easy is teachable; Hard punishes lazy moves. The AI plays exactly the same rules you do.
- Local two-player. Pass-and-play on a single device.
- Ten hand-crafted puzzles. Each is a position with one elegant bounce chain that scores. Tutorial difficulty up to Hard.
- Hint, undo, replay. Tap the lightbulb mid-turn for the engine's recommendation. Step back to the start of any turn. Re-watch any past match move-by-move.
- Achievements and stats. Track wins, longest bounce chains, AI difficulties cleared, and more.
- Configurable own-goal rule. Default: own goal loses. Switch to "boundary" if you'd rather treat the wrong goal as a wall.
LANGUAGES
Available in English and Simplified Chinese.
Designed for short matches and long flights. Bring a friend, or beat the engine.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
1. Introduced an optional location-based feature for localized content and event suggestions.
2. General performance enhancements and bug fixes.
The developer, Changsha Tianyubai Technology Co., Ltd., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Location
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Changsha Tianyubai Technology Co., Ltd.
- Size
- 71.2 MB
- Category
- Games
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later.
- iPhone
- Languages
- English and Simplified Chinese
- Age Rating
4+
- 4+
- Copyright
- © 2026@TrajectoryFootball