Boost is like retweeting something, you can have followers in the fediverse. Boosting makes something more visible to everyone, so you upvote/downvote things you personally like/dislike and boost things you think your followers/everyone would like
Think of this place as a cross between email, Twitter and reddit. All communities can interact with each other and are independent
The tribes series, or z-axis games, where you are able to move up and down as well as the traditional x-y movement you see in virtually all games. Usually set as shooters, they are fast paced movement games that have a huge skill curve which is why they aren’t made that often. Super fun when you get the hang of it though
Example
https://youtu.be/xOK3n8j7czA