|Level 636||Level 637||Level 638|
Level 637 is the 7th level in Opulent Observatory and the 155th animals level in Bubble Witch 2 Saga. To pass this level, you must save 5 animals and score at least 9,000 points in 30 moves or fewer. When you complete the level, Bubble Rain is activated and will score you additional points.
- This level is easy.
- Drop large bubble groups. Zen Bubbles don't help much.
- For the second and fifth animal you have to make matches with the cursed bubbles.
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- Past version had 21 moves.