Fill In comes from GalacticThumb.  The object is to get Your Man to traverse over all of the squares.  It's okay to backtrack many times.
A much better, similar, game is Mortal Coil.   I did 180 levels of Fill In in about 1 hour. It's just too easy.
Worse: I think some of the puzzles in the early levels get repeated.  No idea how many levels there are.https://itunes.apple.com/us/app/fill-in/id1453785829"mt=8

Other games by Galactic Thumb

Cuzzle
Waiit

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