You can game with the Intel graphics but settings on a lot of games will need to be set fairly low to play at a decent frame rate. If you want a gaming laptop then go for Nvidia or you will most likely be disappointed. There is a list here http://www.tomshardware.com/reviews/gaming-graphics-card-review,3107-7.html showing how different GPU's stack up against each other.
now a days for gaming u should have minimum Intel Hd 5000 graphics for low games, for now a days game, not enough intel Hd graphics, u must have amd or nvidia DDR5 Gpu....
You can play most games at low 720P with the integrated GPU, But if you want a playable experience get a laptop with a standalone gpu, Like a GTX 860m for example.
You can game with the Intel graphics but settings on a lot of games will need to be set fairly low to play at a decent frame rate. If you want a gaming laptop then go for Nvidia or you will most likely be disappointed. There is a list here http://www.tomshardware.com/reviews/gaming-graphics-card-review,3107-7.html showing how different GPU's stack up against each other.
Unfortunately that hierarchy chart doesn't even include Nvidia's previous generation 700M series, never mind the current generation 800M series.
Agreed with what JuniorPCBuilder said, if you push graphics settings and resolution down enough you can play a lot of games on integrated graphics, but it certainly won't be pretty.
If you're going for a dedicated card, I would recommend getting at least the 840M or 740M. For light gaming at mild settings these provide a good price-performance compromise.