Pokemon Dash features little to do with Pokemon, and nothing to do with fun video games.
The gameplay in Pokemon Dash is horrible. It would have been much better off with the name Pokemon Scratch, because that's literally all you do. You scratch the stylus in a frenzy across the touch screen, and hope Pikachu, and only Pikachu, can make it through various obstacles to beat a weird rooster or funky chameleon. Yeah, the game didn't even feature two playable characters, or unlockable characters or really unlockable anything. But that doesn't matter, because you'll bore of the game before you feel like wanting to unlock anything anyway. The graphics appear to be prerendered 2D sprites, everything looks sort of fuzzy though, and just plain bad. The scenery is even worse, tree there, tree there, puddle there, another tree there. That's the best the game can do. We should applaud them for trying. The sound is just awful, bad music and bad sound effects for a bad game.
Your better off not even thinking about Pokemon Dash, as it is an absolutely terrible game. It was a quick release for the DS so blind Pokemon fans would buy anything with a yellow rat on the cover. But don't be fooled, the game has nothing to do with catching monsters and the whole touch screen control is a bold faced lie. It's not control, it's just a mad scratching motion with no depth and no point. Avoid this one at all costs.