"A fantasy d20-themed dungeon crawler", to quote DarkGod's comment. Inspired by Incursion by Julian Mensch. Made available under Open Game License. This is a non-profit fan project. No money is made. There are currently only two people working on the mod. However, we have released several beta versions so far.
Tooltips now contain information about the creature's hostility, the number of such creatures the player has killed and the XP the player would be awarded for a kill.