Campaign
Demo
Devil May Cry/Kingdom Hearts 2 inspired combat, sliding on the terrain, and the overworld navigation of Treasure Islands.
We need more fans I beg of you.
On the subject of map limitations. I enjoy making the use of small "transition" maps from time to time. Usually containing no substantial game play or real content, just to set the mood and sometimes avoid technical issues. Treasure Islands had a number of these like so:
So do these kinda...