Lost source

Lost Source PDF, compiled from various /tg/ posts by "MAD MONOTREEME"

What happens when you cross Eclipse Phase, Bloodborne, the Dark Souls series with tales of vanished humanity? You get a grimdark version of Engine Heart.

"(Imagine this read in the voice of Eileen the Crow)" Humanity is gone, naught left but a memory. Its great city is not empty, it teems with monstrosity. Its creations scrounge among the ruins for tattered memories, their own minds cold and without innovation. The world convulses and shifts, but it is the twitching of maggots in an electrified corpse. And yet, something stirs. Among the waste and dead, something rises. You are born (or were you awoken?) into this world. Are you the artifice of human hands? Or were you a being of flesh, rendered into the body of a machine? It is, ultimately, of no consequence. All that you know is that you must survive, and cut to the heart of this dismal stagnation. Take up your arms Awoken Intelligence. Forge your frame into a weapon worthy of slaying gods, and we might yet see a new dawn over this city.


Lost Source uses a 1d100 roll under system as the core mechanic, including degrees of success or failure for every ten percentile points above or below the target you roll. In an opposed test, the goal is to have a greater margin of success (or less margin of error) than your opponent. Ties are determined by having the best base attribute, with ties there being resolved by the GM with a preference for "nothing happens".

Core attributes / characteristics / statistics (the source currently uses all these terms interchangeably) are:

  • HP / Vitality
  • Strength
  • Dexterity
  • Mobility
  • Processor
  • Hardening
  • Firewall
  • Encumbrance
  • Mass
  • Perception
  • Psyche
  • Source

Like many /tg/ projects the mechanics are heavy on ideas a light on consistency. To quote the current PDF: "WHAT THE $!%$%## IS CARRYING CAPACITY AND WHY DOES IT NOT SEEM TO APPLY TO ANYTHING??!?!??!!!!11!!!!1i!"

'"We're trapped in the belly of this horrible machine...And the machine is bleeding to death."'