A big overhaul mod that adds new types of technologies, recipes, items, entities. Configurable in Config.lua to disable/enable any part of the mod. Dynamicly replaces disabled prototypes with enabled ones.
I downloaded this version and started up my saved game. YARM went into a loop straight away with a stack trace about lead ore. Was there a change there?
The new update introduced metallurgy which combines all ores into 3 ores. If you wish to play with old ores, change Config.Metallurgy = false in Config.lua