Why is this interesting? Because the last cell can be anywhere in the grid.
What's not so good? Most of the puzzles have multiple paths/solutions. But that's okay because I think we all like puzzles that are semi-easy that we can actually do!
There are 200 levels & I've solved about 175 of them. According to the leaderboard, I'm #6 out of some 8000 players.
Vladimir Golovnev has been producing some interesting puzzle app games recently. Numbermania is actually pretty outstanding if you take the time to figure out a good strategy.