How can I unlock Dry Bowser in Mario Kart Tour?

To unlock Dry Bowser in Mario Kart Tour, one needs to obtain him through the game's gacha-style pipe system or purchase him from the in-game shop when available. Players can use rubies to fire the pipe, which gives them a chance to get various drivers, including Dry Bowser, as a random reward. The odds of unlocking him can be low and are subject to the game's current spotlight and featured characters. Additionally, Dry Bowser may occasionally appear in the shop as a high-end character, but his availability rotates, and one will need a significant amount of coins or a High-End driver ticket to acquire him. It is also worth noting that special tour events and seasonal promotions might increase players' chances of getting Dry Bowser by adjusting the odds or featuring him more prominently in the pipe rewards.