Back to real reels: five columns and fixed lines
After the tumbling grids that dominate modern free slots, Big Bass Bonanza feels almost old fashioned, and that is a large part of its appeal. Five reels, three rows, and a fixed set of paylines running across them. Symbols land, the reels stop, and the machine checks each line from the leftmost reel rightwards. Nothing cascades, nothing counts, nothing tumbles. If a matching run does not start on reel one, it does not pay.
The lines are fixed, which means you cannot switch any of them off. The number is set and your bet is spread across all of them. That simplifies the control panel considerably: there is no line count to fiddle with, only a stake, and the machine handles the rest.
The balance is virtual credit. There is no deposit behind it and no withdrawal in front of it. Treat the demo as a workshop for learning exactly how the collect mechanic behaves, because that mechanic is the entire game and it is worth understanding properly before it costs anything.