Sakurai reveals the PowerPoint presentation he used to introduce Kirby to Nintendo in 1990

To celebrate the 100th video on his YouTube channel (called "Masahiro Sakurai on Creating Games"), the famed designer has shared the original documents he used to sell the idea for Kirby to Nintendo in 1990.

Masahiro Sakurai submitted these concept art for Kirby's Dream Land to Nintendo in May 1990, when he was only 19 years old.

The presentation lasted just 20 minutes, and Sakurai tried to make it simple enough for everyone to understand how the game works and how much fun it could be.

According to Sakurai, Kirby's Dream Land took no more than a year to develop.

His biggest challenge was fitting the game's 2 megabits into a 512 kilobit ROM.

Sakurai got around this problem by reusing the design of some enemies for others (this is the case with Waddle Dee and Waddle Doo).

What the documents didn't say was that Kirby's Dream Land would go on to sell 5 million copies and become a huge hit. It was so successful that when it was re-released on the Game Boy, it still topped the sales charts.