I was playing tenchu last night on the PSX, and I thought to myself, the GBA could get pretty close to those type of screens, especially after looking at this screen
If you have played tenchu, you would know that after looking at the screen above, it would be pretty possible. You can see texture and light maps, and there's atleast 3 characters on screen (with one character on screen mostly), which is pretty much like what tenchu is like.