Metal Gear Rising: Revengeance - Intel HD Graphics 4600:
This game works quite well on lightweight hardware. Here it is running on a small form factor (SFF) HTPC mITX system without a video card. The CPU is doing all of the work here. This system runs on only a 150W PicoPSU. As you can tell by the video, things are definitely moving right along.
Doggone fun game to play, too. Just don't take it too seriously.