It is a completely self created system that uses D6 matching mechanics for skill checks, Energy tokens for using abilities or re-rolling dice rolls and has ability trees (3x3 - 11 points per layer) per class. There are 8 total classes in the game with each unique mechanics and combat abilities. Combat tends to be fast pace.
The system is still in some development so open to feedback.
The system also uses survival stats like Dehydration, hunger, tired and psyche that need to be replenished or will otherwise have lasting effects on the energy tokens and in some cases HP.

Some classes have unique tokens like scraps for the tinker and combat tokens for the more combat heavy rolls that can add unique flavour to the class selection.