Solve logic puzzles by coloring tiles red or blue. Follow rules to avoid three same-colored tiles in a row or column. Ensure each row and column has equal red and blue tiles. Complete grids of sizes 4x4, 6x6, 8x8, and 10x10.
Discover global architectural masterpieces offline.
The app provides a GPS-enabled guide to architectural achievements from the 20th and 21st centuries. It offers descriptions, photos, and directions for buildings worldwide, with offline access to all information except maps.
Solve puzzles featuring famous buildings, sculptures, and bridges. Learn about architectural landmarks through interactive puzzles. Unlock levels to train attention, memory, and logic skills. Share completed puzzles with friends.
Assemble puzzle pieces to form clues. Identify matching word fragments to complete clues. Solve with 4 to over 40 pieces. Track progress through increasing difficulty levels.
Play by filling a 9x9 grid with digits 1-9 in each row, column, and 3x3 box. Choose from 5 difficulty levels. Levels are generated using AI and machine learning. Track progress and revisit previous games.
Track train arrivals and departures at stations in DC, Maryland, and Virginia. View real-time schedules and service alerts. Receive countdowns for upcoming trains. Locate nearby entrances and exits.
Practice mental arithmetic with addition, subtraction, multiplication, division, and mixed modes. Use 1 to 5 digit numbers in column format. Track daily scores and view progress graphs. Compete in rankings via Game Center.