Pingu Drop vs Slitherlink+

A whole colony of penguins needs sorting - and the clock is already ticking. Slide a colored tray across the ice, and every penguin of that color tumbles straight in. Fill every tray before time runs out. Easy to pick up. Very hard to put down. HOW IT WORKS Drag a tray anywhere on the board. Matching penguins drop in automatically - but a tray is blocked by any penguin of a different color. Clear the right ones first, open a path, and empty the board before the timer beats you. 500 LEVELS, EACH ONE HAND-TUNED Start with a few penguins and one tray. Finish with dense boards, layered goals and puzzles that take three attempts and a plan. Every tenth level gives you extra breathing room on the clock. MECHANICS THAT KEEP EVOLVING Just as you get comfortable, the ice shifts: - Nested trays - clear the inner color first, then the outer - Keys and locked trays - collect keys to break the locks - Dispensers - feed penguins into place one at a time - Rails - some trays only slide on one axis - Linked trays - move one, they all move - Frozen trays - thaw them by clearing others first - Rope barriers - find the scissor penguin to cut through - Unstable penguins - a lit fuse, and it is counting down - Butterfly penguins - get too close and they flutter away - Hidden trays - the color stays secret until you touch it - Bonus-time penguins - grab them for precious extra seconds FOUR BOOSTERS FOR TIGHT SPOTS Freeze stops the clock. Magnet pulls a stuck penguin off the board. Rocket clears a single tile. Solvent dissolves an entire tray. Save them - the late levels will ask for them. BUILT FOR ONE-HANDED PLAY One thumb, no tutorials to sit through, no timers between sessions to wait out. Perfect for a commute, a queue, or five quiet minutes. RELAX UNDER THE NORTHERN LIGHTS Soft aurora skies, chunky penguins and a calm arctic soundtrack. Satisfying when you win. Never stressful when you lose. Can you sort the whole colony?

Slitherlink is a logic puzzle: draw one closed loop through a grid of cells. Each number says how many sides of that cell the loop runs along. Every puzzle has exactly one solution, and you can always find it by reasoning, without guessing. There are absolutely no ads and you can play offline. NOT JUST SQUARES Classic Slitherlink is played on squares. Here they are one grid among many: Honeycomb, Cairo pentagons, Kites, Diagonals, Snowflakes and Penrose tiles, with more on the way. PLAY YOUR WAY Four sizes from small to huge and three difficulties in every grid. Mark your favorites and let the game deal you a random one. UNLIMITED LEVELS Honeycomb is free, forever, and its levels never run out. Every other grid comes with free levels to try, and a single one-time purchase unlocks unlimited levels in it. HELP WITH THINKING Lines and clues color themselves as you progress. Parity shading lets you mark the inside and the outside of the loop, by hand or automatically. Wrong edges can be highlighted. Or switch it all off for the harder pen-and-paper look. SEE HOW YOU DID When you finish, see the median time of everyone who solved that kind of puzzle and where yours stands. Share it if you like, or turn the ranking off for a no-pressure game. --------------- Questions or problems? Please email, and you will get an answer. --------------- Slitherlink is also known as Loopy, Loop the Loop, Fences, Takegaki, Suriza and Dotty Dilemma. If Sudoku has gone stale, this is the next puzzle to learn.