Can be found here.

This tech demo features instances like rain drop and splashes, although the current map provided doesn't have any water squares.

Entities have been disabled, but can be reenabled by editing the VC file, looking in the 'initgame' function and removing the /* */ from around the entity data.

Also included is a early version of the map maker, its pretty bare bones right now but you can draw out your maps, place objects and lights. Don't place stairs, they're not finished in the editor and cause problems in the game if used.

Read the text file included for a few more details.

You can also check out the *.VC at the top for what is being worked on and to be worked on.