Tap on a tube to select it, then press on another tube to transfer the top ball. Organize all balls into tubes with matching colors to finish the level. Just balls of the same color can be placed together. Empty tubes can be used to hold balls. Strategize your moves carefully as some levels have few empty tubes. Avoid getting stuck by not filling a tube with balls of different colors. Progress through festive levels with rising difficulty. Complete each level with the least moves to achieve higher scores.