Play Gridlark — Free Logic Puzzles & Word Games

NEW · 1,000 PUZZLES EACH

Flip Lights

One tap changes everything around it.

Puzzle 1 / 1,0000 moves · 0 hints

7 lights left

No timer or lives. Switching puzzles starts a fresh board. Progress lasts while this puzzle stays open; it is not added to your account score. Daily puzzles change at 00:00 UTC.

NEW · DEDUCTION

Codebreaker

Four digits. Eight guesses. Every clue counts.

Daily · Loading…0 / 8 guesses

Same code worldwide. A new one at 00:00 UTC.

Try any four different digits to get your first clue.

Keyboard: arrows to move · digits to fill · N for notes

1 / 16 squares connected

Each city keeps its own round. Switching cities does not pause the clock.

SEOUL STATION QUIZ

Seoul Stations

525 stations across 14 lines, including suburban branches. Type a name and press Enter.

0 / 525Shared stations count once

Challenge20 minutes · 525 unique stations

20:00

Choose all 14 lines or a single-line challenge.

Korean or English. Spaces, hyphens, capitalization and the station suffix do not matter. Same-name stations fill together. No penalty for wrong guesses. The clock keeps running when you switch games or close the app.

Seoul · Geographic map

Changing the map does not change your challenge.

Tap a dot for its lines. Station names appear when you find them.

Drag to move. Pinch or use + / − to zoom. Keyboard: arrow keys, + / −, Home. The rivers, coast and regions are your clues.

Map data © OpenStreetMap contributors · ODbL 1.0. Additional station coordinates: Wikidata (CC0). Names and line order: Seoul Metro. Adapted by Play Gridlark. River widths and rail connections are simplified. Download adapted data (includes answers)

Show 1 route strips

A simplified branch-by-branch view. Swipe sideways on small screens. Line codes above a blank are interchange hints. Choose another line above to change these strips.

Northern · Yeoncheon–Guro

Incheon branch

Southern · Guro–Sinchang

Gwangmyeong branch

Seodongtan branch

Show 1 station list

1Northern · Yeoncheon–Guro

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1Incheon branch

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1Southern · Guro–Sinchang

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1Gwangmyeong branch

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1Seodongtan branch

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Lines 1–9, Suin–Bundang, Gyeongchun, Gyeongui–Jungang, AREX and Gimpo Goldline. Includes the Seoul Station, Imjingang and limited Gwangun Univ. branches. Other lines, ITX services, Dorasan and future extensions are excluded. Transfers count once; the two Sinchon stations and two Yangpyeong stations are separate places. The map uses real locations with simplified station-to-station connections, not every service stopping pattern. Optional strips show quiz order, not geography.

Web preview: refreshing this page resets the round. City quiz results do not change your logic puzzle score.

Sources and map notes

Station names and branches checked against Seoul Metro Cyber Station in Korean and English on 11 September 2026. Geography: OpenStreetMap contributors, adapted under ODbL 1.0, with 18 station coordinates from Wikidata (CC0). Transfer platforms are merged into one quiz point. Same-name Sinchon and Yangpyeong stations remain separate locations. Regional labels and river widths are illustrative; no official affiliation or journey-planning guarantee.

Seoul Metro · Korean Seoul Metro · English Map data and license

Both current and selected common older names are accepted, including Bulamsan / Danggogae and Jayang / Ttukseom Resort. The adapted data is available from the map credit. No live tiles or location tracking.

SYDNEY STATION QUIZ

Sydney Stations

176 stations across M1 and T1–T9. Type a name and press Enter.

0 / 176Shared stations count once

Challenge20 minutes · 176 unique stations

20:00

Choose all 10 lines or a single-line challenge.

Capitalization, spaces and punctuation do not matter. No penalty for wrong guesses. The clock keeps running when you switch games or close the app.

Sydney · Geographic map

Changing the map does not change your challenge.

Tap a dot for its lines. Station names appear when you find them.

Drag to move. Pinch or use + / − to zoom. Keyboard: arrow keys, + / −, Home. The rivers, coast and regions are your clues.

Map data: © State of New South Wales (Spatial Services, a business unit of the Department of Customer Service NSW). Spatial Services · CC BY 4.0. Adapted by Play Gridlark. Real station locations; simplified connections, not exact tracks.

Show M1 route strips

A simplified branch-by-branch view. Swipe sideways on small screens. Line codes above a blank are interchange hints. Choose another line above to change these strips.

Tallawong–Sydenham

Show M1 station list

M1Tallawong–Sydenham

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M1 covers Tallawong–Sydenham. T1–T9 include the corridors and branches shown here; intercity trains, event-only services and future extensions are excluded. The map uses real locations with simplified station-to-station connections, not every service stopping pattern. Optional strips show quiz order, not geography.

Web preview: refreshing this page resets the round. City quiz results do not change your logic puzzle score.

Sources and map notes

Names and corridor order checked against Transport for NSW timetables on 11 September 2026. Independently drawn by Play Gridlark; no official affiliation. Not for journey planning.

Station coordinates Water bodies Coastline M1 timetable T1 timetable T2 timetable T3 timetable T4 timetable T5 timetable T6 timetable T7 timetable T8 timetable T9 timetable

NSW Spatial Services geography snapshot: 11 September 2026. Clipped, generalized and projected to Web Mercator. Ocean fill joins coast segments across waterbody mouths. Regional labels are approximate hints. Map data is bundled for offline play; no live tiles or location tracking.

ORIGINAL ENGLISH MINIS

Mini Crossword

Longer answers. A little more to think about. Try Long Words, or warm up with Classic.

00:00

1 across · 8 lettersA place to find both Escape and Return

Type A–Z. Tap a selected cell again to switch direction. Arrow keys move; Enter goes to the next clue.

Pick a clue and type your answer.

Across

Down

Web preview: progress stays while this page is open. Refreshing resets these minis. Checks and reveals are recorded separately. No lives or points to lose; these minis do not change your logic puzzle score.