Explain the games in The Mahabharat: 'The Dicing' and 'The Sequel to Dicing'.

I understand you are referring to the games of dice that Yudhisthir played with Shakuni on the Invitation of Dhritrashtra.

There were actually two sessions of games mentioned in Mahabharata. In the first session Yudhishtir lost all his kingdom and possessions including himself, his brothers, and finally his wife Draupadi. When this happened Duryodhana had Draupadi forcibly brought to the assembly hall. Here Dushasan, a brother of Duryodhana, tried to strip Draupadi in the assembly hall in front of all the persons assembled there. Draupadi was saved from this atrocious and shameless act only by a divine intervention. At this moment inauspicious signs like howling of donkeys and dogs started occurring. Dhritrashtra, interpreting these signs as signal of complete downfall and destruction of his family, realized the folly of his actions in enticing Yudhishtir to gambling in a game of dice, and returned everything lost by Yudhishtir.

In consequence, Yudhishtir returned to his capital Indraprastha. But Duryodhana and Shakuni were very much dismayed by the decision of Dhritrashtra, and once again prevailed upon him to invite Yudhishtir for another game of dice. Yudhishtir, though  not at all keen to play, accepted the invitation to save his honour in line with the customs of his time. Thus a second game of dice took place.

In the second game the wager was between Duryodhana and Yudhishtir, that looser will, along with all his brothers, exile to forest, followed by one year of incognito stay, with further condition that if recognized during this period of incognito stay, they will again go to exile for 12 years. Yudhishtir lost this game also. An a result went into exile with his brothers and Draupadi. They spent the next thirteen years in exile as per the condition of the condition of wager.