The Humble Mobile Bundle 3, which made its debut last week - headlined by Vlambeer's Ridiculous Fishing - has now added three new games, available to those who have contributed more than the average pay-what-you-want price.

Driving simulator Desert Bus, about a bus on its way from Arizona to Las Vegas, is perhaps the most well-known of the trio. You may have heard of it from its annual fundraising campaign called Desert Bus for Hope, which recently cleared over $520,000 for Child's Play - an organization that coordinates donation of toys, games and consoles to sick children in hospitals across the country.

Alongside the game about driving a bus for hours is minimalist puzzle game and former iOS-only success Hundreds, which tasks players with tapping circles to increase their size and numerical value, with the goal being to accumulate a total of 100 on-screen points. The third game on offer is Spider: The Secret of Bryce Manor - an action-adventure platformer. A sequel, titled Spider: Rite of the Shrouded Moon, is due in the spring.

There are currently just over six days left on the Humble Mobile Bundle 3 clock.