Who Wants to Be the First?

Who Wants to Be the First? (Vietnamese: Ai là Đệ Nhất) is a custom-made game show based on an international television game show Who Wants to Be a Millionaire? (shortened as WWTBAM) distributed by Sofia the First Channel. It was hosted by nam7ccaothang, listed by his real name Đặng Hoàng Nam. With only one contestant plays at a time, the contestant have to tackle series of multiple-choice questions to win prizes. The show was originally named Who is the First, starting on its second season, it was renamed to Who Wants to Be the First?

The show was premiered on July 19, 2020 on Sofia the First Channel. Starting from September 15, 2020, the show was re-aired on Sofia the First Channel 3, which is a channel that specialized in airing custom-WWTBAM series. The main currency for the show was originally StF, which stands for Sofia the First; this currency was used for the first five seasons. Starting on the show's sixth season, the main currency was changed to ĐS, which stands for Đong Sofia the First due to a dispatch was issued by the host of the show himself on May 3, 2021.

Core rules
Contestant have to answer a total of 15 general knowledge multiple-choice questions that increases in difficulty with 3 milestones which located in questions 5, 10 and 15. If they answer correctly, they can move on to the next question. If the contestant answer the question wrong, the prize will go back to the last milestone. If no milestone is reached, the contestant don't win anything. The contestant feel unsure about an answer and does not wish to play on, they can walk away with the prize they have won to which the host will ask them to confirm this as their final decision; in such cases, the host will usually ask them to state what answer they would have gone for, and reveal if it would have been correct or incorrect.

Season 2 changes
Season 2 saw a few changes on its money structure, as well as the gameplay was slightly shorter than the previous season. Contestant now have to answer a total of 12 questions instead of usual 15, and the 3 milestones are located in questions 2, 7 and 12.

Lifelines
During the game, the contestant is given a set of lifelines that they may use only once to help them with a question. During the first season, an extra rule for these lifelines is applied. In the first milestone (questions 1-5), all 3 lifelines are free to use, depending on the contestant's usage. On the second milestone (questions 6-10), the contestant can only use 1 of the 3 lifelines. After the player reaches the 3rd milestone (questions 11-15), all 3 lifelines are free to use again. But on the second season onwards, this rule was removed permanently due to the whole game was easier than the original show. When the show uses the Clock Format, usage of lifelines would temporarily stop the clock.

Money Tree
The money structure varied from each season, and sometimes there are two or more structures every season. During the first season, the money tree was displayed with the points value, under the currency of "1 point is equivalent to 1,000 StF". Starting on the second season, the points value was removed and replaced with the monetary value. Also starting on the sixth season, the currency was changed from StF to ĐS. The table below uses the points value, under the currency of "1 point is equivalent to 1,000 StF" in the first five seasons, and "1 point is equivalent to 1,000 ĐS" starting on the sixth season.