Laundry enters on the top line. Whatever you miss drops to the line below — and each line runs slower than the one above, so it piles up. Ten stains past the bottom and you're done.
A stain only lifts with the matching cleaner colour — right-click, the swatches, or the number keys. Big stains take two hits. Clear every stain on a garment and it pops off the line, closing the gap.
You start on two colours. Clear enough garments and the next level adds another, and tops up your bleach bomb.
Score 0
Stains cleaned 0