Nah, not Slitherlink, that's something else. I've heard it called "Link-a-pix" and various other things, I'm not even sure what its "official" title is, if it even has one.
As for Tappingo, this is a fairly bad game really. There's just no difficulty at all. I solved the first couple of puzzles and then skipped straight to the last one and solved that as well with absolutely no struggle, I didn't even need to stop and think because everything was so obvious. It's basically as difficult as colouring in a picture in a colouring book, or painting-by-numbers. It's not a puzzle.
I can see why some people might enjoy that, because it's kinda relaxing just working through them and colouring them in, but as I say there is just no challenge at all and anyone buying this expecting a puzzle game is going to be massively disappointed when they find that there aren't really any puzzles that require solving.
Add to that the shoddy presentation and terrible "quirks" like having multiple solutions for puzzles and it becomes irritating. Even this instance...
[ ][1]
[1][ ]
... when it's separated from the rest of the puzzle is annoying to me. Both solutions appear to work but a puzzle game should never give the player a situation like this.
So yeah, some people will get something from this but if you want a puzzle game, I'd stay WELL away from it.
Yep. Bought this on GAF hype. Thank goodness it was only 2.99. Love Picross and KenKen and Sudoku. The OP is simply wrong.