Gimmick puzzles! Here’s a pair of not-entirely-easy Slitherlinks.
If you cut the first Slitherlink into four 5×5-sized quadrants, then inflate each quadrant (each pair of adjacent cells will be pushed one cell apart, so the inflated quadrant takes up a 9×9 square), and then interleave them back together, you get another valid puzzle, the second Slitherlink.
Regular Slitherlink rules.
EDIT: I somehow completely forgot that Slitherlink uses a dot grid, not dashed lines. Fixed.