HamiLoop vs Slitherlink

HamiLoop: Draw one loop. Pass through every square on the grid exactly once. That's the whole idea behind HamiLoop, and it's harder than it sounds. What looks like a simple rule turns into a real puzzle once the grid grows, and figuring out the right path can take real thought. Grid sizes vary a lot, so difficulty varies with them. Some puzzles are solved in a couple of moments, others take much longer and require some careful planning. With 150,000 preloaded levels, you can pick a size and difficulty that suits your mood, and a new difficult puzzle is added every day if you're after something tougher. There are no timers and no countdowns anywhere in the app, so every puzzle can be worked through at your own pace. Each puzzle is presented with clean, colorful visuals, though the colors are purely decorative and don't affect the solving itself. If you like tackling more than one thing at a time, you can keep several levels open in parallel, so an easier puzzle is always there when you want a break from a harder one. Alongside the daily challenge, an extra hard puzzle is released once a week for players looking for something tougher still. The core idea of the game is inspired by Hamiltonian cycles, a well known concept from graph theory, giving the puzzle a solid mathematical foundation beneath its simple rule.

Slitherlink, also known as Loop the Loop or Fences, is a logic puzzle about drawing a single continuous loop along the grid edges. Each numbered cell tells you exactly how many of its four sides the loop must use. The loop never crosses itself and never branches, so every puzzle has one solution you can reach by pure deduction. Features: • Tap an edge to draw a line, tap again to mark it crossed out, once more to clear • Numbers fade to grey once they have exactly the right lines around them • A clue turns red if you draw too many lines around it • Undo any move with a single tap • Three difficulty levels: 7x7 Easy, 10x10 Medium, 12x12 Hard • Progress saves automatically, so you can stop and pick up later • Stats and best times for every difficulty • Plays fully offline A calm, addictive deduction puzzle that rewards patient thinking. If you like Sudoku, Hashi, or Nurikabe, Slitherlink could be your next obsession.