AtCoder will hold a new onsite contest called AtCoder World Tour Finals 2018.
If you get the top 30 places in AGCs (and maybe some other types of contests), you will get GP30 scores. Eight people with the highest total GP30 scores in 2018 (except for people under 18) will be invited to Japan, probably in February 2019. We will cover flights and hotels. There's no upper bound for the age. You can participate in the finals even if you are employed.
Please check the details here.
Here's the total GP30 scores in 2017:
UPD: Added detailed information at the bottom of https://atcoder.jp/post/171.