Two major rule changes from the original Phase 10:

Players pick a phase at the beginning of each hand based on the cards they have. Phases can be done in any order.

One card can be saved each hand to be used in a future hand.

Original Phase 10 description:
A rummy-type card game where players compete to be the first to finish completing all ten phases. Phases include collecting runs of numbers, collecting certain number of a given color cards, etc. The first player to finish completing the 10th phase wins. In case of ties, the player with the least number of points wins.