Checklist of cool things to do:

Gather old friends that are now living in different places across two countries to make another great game after 2 years of pause (thank you @ksandr7 for that) - Check!

Spend the first two hours at late night discussing game ideas and at the morning select the idea that one of us just dreamed this night - Check!

Find a great sound designer in the last moment (we thought it to be a silent game before that) - Check!

At the second day make the game designers code (if you can do it - do it) - Check!

Work together like it's the last day of the world - Check!

Make a great game - Check!

Finally have a healthy sleep - Check!

Say publicly that I love my team -

Guys, I love you, you're the best!

Check!