It's just for me? Or Gamejolt is to much quiet?

Question: For example, I add a game in 'Early Access' and some players can play. When I add more content, the game in players' PC automatically updates? Or the player needs to install again the game?

https://www.youtube.com/watch?v=bymTBgZoAE0

Devlog01 WIP
This sample contains:
- Login System
- Choosing Character - Chat System (Basic)
- Quest System (Basic)
- Inventory System (Basic) - Level Up and XP System (Basic)
- Swap between 2 Game Modes (Combat and Normal)
- Settings (Beta)

​Thank you!

YouTube
https://www.youtube.com/watch?v=bymTBgZoAE0
youtube.com

I did a Simple Drag and Drop that took me some time but I hope it's good.

After a simple "Drag and Drop" to Inventory, was time to make a merchant to sell and buy items..

I hope you like! :)