Celebration - Let's play a game!

Open

I recently have reached a particular milestone, so let's celebrate it with a train.

Now I should say what the milestone is and put the link to the train but instead... I want to play a game.

UPDATE

The game is over, the puzzle has been solved!. The milestone is that I have been whitelisted 100 times and blacklisted zero times, a whitelisted/blacklisted ratio of 100:0, so why not celebrate it by sharing this infinite positivity with all of you? Here's the train, all on board!

Thanks to all of you who have added me to their whitelist and to all of you who participated in this event. Good luck to all!

The game

The train is created and is running, it has 7 wagons and will last for a week.
It's a community game, to get on the train one of you has to find out what the milestone is and when that happens I will put the link to the train and everyone will be able to get on board.
To find out what the milestone is you have to ask me questions that can be answered with a yes or a no, or if you think you know what the milestone is you can make a guess.
Each user can make only one question/guess.
To make the question/guess respond to the first comment that I will leave below.
You can use the rest of the thread to suggest what the next question should be, make a guess, whatever, but I'm not going to answer there. Unless it's a question about the rules.
Every day that passes without anyone finding out what the milestone is I will reveal one of the games in the train so that you know what you are missing.
If no one finds out what the milestone is in 7 days the train will disappear forever with no passenger on board.
Maybe I will delay the answers to make it more... interesting.

First day reveal: Little Nightmares Complete Edition
...
...
...
...
...
...

Note:
Many questions about whitelisting can have different answers depending on how you read them. This is how I am reading them.

A question about my whitelist count, ratio, whatever: It is about my whitelist, the amount of people that I have added to my whitelist.
A question about my whitelisted count, ratio, whatever: It is about the amount of people that have added me to the their whitelist.

The same for the blacklist/blacklisted

View attached image.