you don't have a video card ,you have integrated video device ,a chip built into the motheboard ,and it not likely you will be able to run much of a card anyway because of the power supply in that emachine .the black slot at the top right corner is a be a pci-E slot it would take a low profile card ,you are not going to make a gaming computer out of that tower'
also one of your parents just called and she said to tell you to clean your room .lol
nope ,they don't make one ,[well maybe one with just a few more watts than your own or yours actually could be the biggest made to fit that box as i don't know the wattage of yours im only assuming] , that will fit in the box,
your option would be to buy a larger case with a more powerful power supply and move your motherboard to it ,having said that the little Acer was never intended to be a gamer.
what type of games do you intend to play/use, or is gaming actually the reason you want to add the new video card