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黃昏的台北 3D 市景：從七星山、象山或 101 頂上射出紙飛機，借山風、河谷和大樓的上升氣流，把信送到指定的屋頂。

遊戲介紹

《紙飛機橫越盆地》是一款在黃昏台北 3D 市景裡滑翔的遊戲。你從山頂或大樓頂上射出一架紙飛機，沒有引擎，只能借山坡的迎風上升氣流、河谷的谷風和高樓群的熱氣流延長滑翔，把信送到指定的屋頂。

地形和建築來自真實的地圖資料，飛行途中會經過陽明山、基隆河、信義區的高樓和一個個捷運站，地名會直接標在畫面上，像在空中遊覽整座台北盆地。

怎麼玩

• 電腦：往下拖曳拉弓、左右瞄準，放開出手；飛行中 ←→ 側傾轉彎、↑↓ 俯仰，空白鍵收翼俯衝，按住 Shift 加速時間。
• 手機：左下固定搖桿操控，右下「收翼」消高度、「加速」快轉、「拍照」存明信片。
• 看氣流顏色：橘色是大樓上升氣流、綠色是山坡上升、紫色是背風下沉、藍色是河谷氣流。
• 降落：從低空慢慢靠近目標屋頂，紙飛機會自己貼上去；太快會滑出去。點小地圖（或 M 鍵）可以切到上帝視角自由看整座城市。

內容與特色

• 7 條航線：七星山 → 天母、大屯山 → 北投、象山 → 信義，還有從台北 101 頂上丟下來的兩條，以及劍潭山、貓空出發的短程航線。
• 收集信件、評星，21 個成就、12 區郵戳和沿途經過的山、捷運站、公園、地標都記在旅行手帳裡。
• 隨時拍照：畫面中央的景點會自動寫上名稱，做成明信片收進手帳，可以下載。
• 水粉速寫和寫實黃昏兩種畫風，中英日韓四種語言，3 個存檔欄位，可以匯出備份。

小技巧

• 出手先拉滿力道，高度就是你的燃料；快到目標時再用收翼把多餘的高度消掉。
• 象山那條起點比終點低，要先在山坡和信義區高樓的上升氣流裡繞圈爬高。
• 從 101 丟下來的難處是高度太多：繞著信義區盤旋往下，對準屋頂再進場。
• 飛太慢會失速往下掉，拉頭別拉太久，保持速度才飛得遠。

免費與贊助

網頁版完全免費，進度自動存在你的瀏覽器裡。喜歡的話可以按選單的「☕ 贊助我們」，金額自由（NT$30 起），會收到支持者桌布包。

開發筆記

台北的地形、建築高度、河流和地名來自 OpenStreetMap 與公開地形資料，整座城市依紙飛機的位置邊飛邊建。水粉畫風不是貼圖，而是依太陽方向和陰影即時算出亮暗，再疊上筆觸和紙紋。

其他作品

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このページは英語で書かれています。ゲーム本編は日本語で遊べます。

이 페이지는 영어로 작성되었습니다. 게임은 한국어로 플레이할 수 있습니다.

Taipei at dusk in 3D: launch a paper plane from Qixing Mountain, Elephant Mountain or the top of Taipei 101 and ride ridge wind, valley breezes and building updrafts to deliver a letter to the right rooftop.

About the game

Paper Plane Over the Basin is a gliding game set in a 3D Taipei at dusk. You throw a paper plane from a mountaintop or a rooftop. It has no engine, so you stretch every glide on ridge lift, valley breezes and the updrafts around tall buildings, and deliver a letter to the right roof.

The terrain and buildings come from real map data. On the way you pass Yangmingshan, the Keelung River, the towers of Xinyi and one metro station after another, with place names drawn right on screen, like a sightseeing flight over the whole Taipei Basin.

How to play

• Desktop: drag down to pull back, sideways to aim, and let go to launch; in flight ←→ banks, ↑↓ pitches, Space dives and holding Shift speeds up time.
• Phone: steer with the fixed joystick bottom-left; bottom-right buttons dive, fast-forward and take a photo.
• Read the air: orange is building updraft, green is ridge lift, purple is lee sink and blue is valley breeze.
• Landing: come in low and slow over the target roof and the plane settles on its own; too fast and you slide off. Tap the minimap (or M) for a free camera over the whole city.

What's inside

• 7 routes: Qixing Mtn → Tianmu, Datun Mtn → Beitou, Elephant Mtn → Xinyi, two drops from the top of Taipei 101, plus short hops from Jiantan Mountain and Maokong.
• Collect letters and stars; 21 achievements, 12 district stamps and every peak, station, park and landmark you fly past go into your travel journal.
• Take photos at any time: the landmark in the middle of the frame is named automatically and the shot becomes a postcard you can download.
• Two art styles (gouache sketch and realistic dusk), four languages, and 3 save slots you can export as backups.

Tips

• Launch at full power: height is your fuel. Use Dive to dump the extra height when you get close.
• On the Elephant Mountain route you start lower than the goal, so circle up in the ridge lift and the Xinyi tower updrafts first.
• The hard part of the Taipei 101 drop is having too much height: spiral down over Xinyi, line up with the roof, then come in.
• Fly too slowly and you stall; don't hold the nose up for long, keep your speed to glide far.

Free, with optional support

The web version is completely free, and your progress is saved in your browser. If you enjoy it, tap “☕ Support us” in the menu to chip in from NT$30 and get our supporter wallpaper pack.

Behind the scenes

Taipei's terrain, building heights, rivers and place names come from OpenStreetMap and public elevation data, and the city is built around the plane as you fly. The gouache look isn't a texture: light and shade are worked out live from the sun direction and shadows, then brush strokes and paper grain are layered on top.

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