Scenario

In The Sims 2, there are certain scenarios or mini-games within the game. Scenarios have a timer and some sort of scoring system. They can be started in different ways. If the player's Sim passes the scenario, they usually get a positive memory, and may fulfill a want. Opportunities in The Sims 3 are similar to scenarios, but some of them are untimed.

List of Scenarios

 * Parties
 * Getting into private school
 * Joining a Greek house
 * Dating
 * Outing
 * Getting a Garden Club membership
 * Big Boss (removed)
 * Engagement (removed)
 * Grandchild (removed)

Removed Scenarios
There are some scenarios that were removed before the game was released. Some of the leftover data can be found in the game files by using SimPE. There are three known removed scenarios, i.e. Big Boss scenario, engagement scenario, and grandchild scenario.

The files suggest that the Big Boss scenario is identical to headmaster scenario. In the said scenario, the Sim's boss would be invited to the house for a dinner. Sims would need to schmooze and impress the Big Boss to earn score. At the end of the scenario, the Big Boss would evaluate the score and reward Sims a big bonus or penalize their career performance.

There's very little data that can describe what the other two scenarios would do. There are some dialogues in the game files hinting that engagement or having a grandchild would be triggered by answering a phone call from the fiancée or the grandparent. This is as opposed to the actual gameplay where the players are given freedom to decide when to get engaged or have grandchildren.