I've been playing quite a bit of Banov's upcoming RPG Dubloon lately, which might still be in production for a while although the demo does showcase a number of playable areas already. Basically a party system is already implemented, there are special abilities that can be used to solve puzzles, and you will also come across a town that offers shelter for the night and a marketplace with exotic items to buy. The demo will end shortly after you've managed to acquire your own ship and set sail for the next location.

You can use the F4 function key to switch between full screen and windowed mode. Hold the right mouse button to double your walk speed, and toggle the music on or off by pressing the M key. (direct download link, forum thread)