Have your players brought upon their characters the wrath of the gods (or things far more unfathomable)? Have they decided to enter places the old folks direly warned them to disturb? Have they claimed for themselves an artifact Men Was Not Meant to Hold? Are the stars just not right? Or is it just one of that days, were Lady Fortune is in a spiteful mood?
Whatever it is... if it is an OSR game you play, and if it is misery and failure you want, this Pay-What-you-Want title has a little idea in store for you. For those days were you just feel like that...
Use it only once with a group, and only when there is a fitting occasion (see above). A GM is encourage to give bonus XP to characters that succeeded under such averse conditions.