The gameplay is divided into two main parts. The first consists of exploring planets by foot, moving as you would in any normal platform game. That said, you have to keep adjusting the light which enables you to see the road ahead.
In the second part, you get to travel aboard the spaceship. Using different controls, you can travel to other planets to explore them. It's not particularly complicated to fly the ship, but landing can be really difficult.
Hello World is a fun and beautiful platform and exploration game that's reminiscent of the classics from the 16-bit era. It has absolutely wonderful graphics and gameplay, making it a really enjoyable game all around.