FutureShop's web page is crashing for me (probably the Black Friday sale), but for casual gaming you're definitely looking for an AMD A10 for its price/performance. (Search around for "Mobile Trinity" reviews.)
I did notice on FutureShop's sister store a better deal than your Samsung if you want the larger screen:
Samsung Series 3 15.6" Windows 8 AMD A10-4600M 8GB RAM 750GB HDD Laptop - Silver : 15" Laptops - Best Buy Canada
A little warning as another Samsung laptop owner - the bundled hard drive is SLOW. (I replaced mine with a Seagate Momentus XT and used the big hard drive in an external enclosure.)