Daily Slitherlink
The rule
Draw one closed loop along the dots. A number says how many of that cell's four sides the loop uses.
Tap an edge to draw it. Tap again to cross it off as one the loop does not use, and once more to clear it. Shift tap or right click goes round the other way.
The loop never crosses or branches, and it is a single loop: every corner it reaches has exactly two ends meeting there.
Where to start
A 0 is the best clue on the grid, because all four of its sides are out at once. A 3 next to a 0 is nearly as good: the three sides away from the 0 are all in. Two 3s side by side share an edge that must be drawn, with the far sides of both drawn as well.
In your hands
If you like tracing a single path through a tangle, the wire and disentanglement puzzles are the same pleasure in metal.
Solvable Without Guessing
Every loop here was drawn first as the outline of a blob of cells, so it is a single closed curve by construction. The numbers were then read off it and thinned out for as long as a solver using only forced moves could still rebuild the loop. If it could not, the number went back. That also makes the answer unique, which is why this page can mark your work by the rules alone rather than against a stored answer.
More to Play
There are twenty one daily sudoku variants, a fillomino, a shikaku, a hitori and a tower of hanoi. For puzzles you can hold, see mechanical puzzles.