Lab is not the product
Some prototype pages show Lab, a seed, or Reveal. Those are tools for building and checking puzzles. They are not how you play.
You can ignore them. Open Play, pick a band, and sit with the board. That is the product: Sudoku, Star Battle, and Binary Puzzle, each with one solution.
A seed is a way to point at a specific puzzle in the workshop. Reveal is a way to look under the board. Neither is a player feature you need. Neither is a score.
If you came here to play, stay on the play pages and the how-tos. Leave Lab alone.