Autosave - progress saves every 30 seconds, on every cleared layer, when you pause and when you quit
Continue - pick up where you left off from the title screen, or start a New game
Next round - finishing the dig carries your progress into the next round, even if you quit during the credits
Pause menu - press Esc while digging: music and sound volume, save status, New game, and the s&box menu
Welcome back - Uncle Rudy greets you when you continue a save
Esc menu - on the title and the credits, Esc opens the s&box menu (settings, quit)
Lighting - no harsh side light, and rigs are no longer shiny
Pit walls - the earth around the mine is solid all the way down
Missing UI - magenta panels, icons and fonts in the published game
Numbers - garbled damage and money numbers
Green screen - the camera clipped into the ground around layers 8-16
Floating ground - green ground shelves hung beside the pit when digging deep
Music and sounds - no music or sound effects played in the published game
Dev buttons - developer and testing buttons that were visible in the game