Two new dig sites finish the first part of Old Bones' map: the Junkyard, where scrap pays on every hit and crushed cars need your pickaxe, and the Old Quarry, where TNT crates blast the blocks around them. Plus 20 new skills, more upgrade levels and smoother play late in a dig.
The Junkyard - a third dig site: 50 layers under Rudy's junkyard, with brick, grey gravel, scrap and crushed cars
Scrap - scrap blocks pay a little every time you hit them, not only when they break
Crushed cars - only the pickaxe breaks them; rigs and Biscuit leave them to you
The Old Quarry - a fourth dig site: 60 layers of limestone, dark basalt, silver and coal under an old stone quarry
TNT crates - break one and it blasts every block around it, and sets off other crates nearby; rigs keep away from them
Story - Uncle Rudy has new radio lines for both sites, and each one has something at the bottom
Old Bones' map - the last two pieces of the first map
Junkyard row - 10 new skills, open once you clear the Orchard: Shockwave IV, Car Crusher, Power Drill, Heavy Bits, Turbo Fans, Scrap Magnet, Scrap Dealer, Salvage, Safe Cracker and Fetch
Old Quarry row - 10 new skills, open once you clear the Junkyard: Blasting Caps, Rock Splitter, Hammer Drill, Tungsten Bits, Steam Engine, Demolition Crew, Silver Lining, Blast Pay, Strongbox and Dig Dog
More levels - Crit Chance, Crit Damage, Splash Damage, Hand Drill and Rig Cooling have 30-34 more levels each
Upgrade icons - the upgrade and tab icons are new 3D models in the rigs' style
Upgrade rows - prices never wrap, and the level sits at the end of the values line so long names fit
Damage numbers - one number per block that adds up as you and your rigs hit it, instead of a stack of numbers
Skill tree - the branch and row names are easier to read
Late game - much less lag deep in a dig with many rigs: fewer objects made while digging and a cheaper interface
Camera - the camera no longer swings past the next layer and back after a slow frame