Integrated graphics is fine, or really any wire & tin foil you can cobble together that looks like a GPU.
nVidia GeForce FX 5200 / AMD Radeon Xpress 1200 Series
If you don't have one, just make beep & boop noises with your mouth when appropriate.
200 MB available space
8BitMMO is a retro-style 2D massively multiplayer game! It's a giant construction sandbox -- you can build a home or a castle in a persistent streaming world. Found and manage your own city. Fight evil Lawyercats and engage in player vs player battle. Work in Progress! :)
200+ FPS ( GTX 1060 )
Minimum System Requirements
Recommended System Requirements
Tested on OS X El Capitan 10.11.1
You should get one of the laptops with the glowing logo on the back, because I'm pretty sure that makes it go faster.