This System is magnificient in its simplicity. You can just sit down with your players and start adventuring within 5 minutes. This is all a roleplaying game needs, excellent for rare or irregular game sessions.
You can take any adventure from any fantasy RPG system and convert it to Darkest Warrens on-the-fly.
The only thing that I suggest is that you reverse the player/monster stats from lowest being best (5+, 4+, 4+ 3+ (with 3+ being best; success if you roll 3 or higher on 1d6)) to highest being best (2-, 3-, 3- 4- (with 4- being best, have to roll less or equal than 4 for success)). This way you create infinite space for character advancement, stronger adversaries, and additions as you see fit - IF you want to add your own level of complexity!
Darkest Warrens - highly recommended.
[5 of 5 Stars!]