KAISOKU

Three trains make one faster train. Merge your way from the humble Local to the Shinkansen in a cozy Tokyo yard at dusk. Free, with no ads and no tracking across apps.

Three trains make one faster train. Keep the yard running.

KAISOKU (快速, Japanese for "rapid service") is a calm, tactile merge puzzle set in a toy railway yard above Tokyo at dusk. Drop each train on any free berth of a 5×5 yard. When it touches two or more trains of the same service, they couple into one train of the next service, right where you dropped it, and that new train can set off another merge.

FROM LOCAL TO SHINKANSEN • Eight services to build, each with its Japanese name on the sign: Local 各駅停車, Rapid 快速, Special Rapid, Express, Limited Express 特急, Shinkansen 新幹線, Maglev… and one train hardly anyone has seen. • Chains multiply your fare. One big cascade is worth more than a dozen small merges. • Plan ahead: the next two trains are always on the platform, and the Siding 留置線 keeps one waiting for later.

KEEP THE LINE CLEAR • Roadworks land on the yard, but always with one move of warning. Merge next to them to clear them away. • The IC Card joins whichever line helps you most. • Earn tow charges as you merge, then press and hold a car to send it back to the depot. • The run ends when the yard is full. Your ticket shows the fare, the top service you reached and your best chain.

MODES • Endless 乗車: one long shift, until the yard fills up. • Daily Timetable 本日のダイヤ: a new board every day, with the same trains for everyone. • Hand-made puzzles 詰めダイヤ: a fixed yard and a fixed queue. Clear every car. No luck, just the right line. • Rail Pass 記念きっぷ: collect a stamp for every service the first time you build it.

MADE TO FEEL GOOD • Chunky toy trains whose headlamp eyes blink, glance around and doze off when you take a break. • A living diorama: neon signs, passing trains, falling petals, and a crossing bell when the yard gets tight. • Relaxed station-side music, crisp sound and haptics.

EVERY SCREEN • Plays on iPhone, iPad and iPhone Duo. On iPad and the open Duo, play upright or sideways, full screen or side by side with another app.

FAIR AND QUIET • Free to play. No ads. No tracking across apps. • No timers, no energy, no account. Plays offline. • Game Center leaderboards for your best fare and the Daily Timetable, plus achievements. • Your progress follows you to your other devices with iCloud.

The train services are generic and every line in the game is fictional.