(Note: This topic is similar to In App purchase through gdevelop account but is changed in many ways, therefore I did not see the need to continue the conversation there, but rather start a new post.)
In-App Purchases / Gamepasses with GDevelop Credits
If you haven’t used Roblox before, they have a way to include in-app purchases in your games through items called “Gamepasses”. I’d love to see these in GDevelop as I think it would earn creators (and GDevelop) a lot of money. 
How would this work?
Users in GDevelop would be able to create “Gamepasses” and set an amount of GDevelop credits it would cost to purchase that gamepass. They would also be able to choose a title for the gamepass. Once the pass is created, the pass is given an ID number to reference it. In GDevelop, there would be an action named “Prompt Gamepass Purchase” with a spot for the user to put the gamepass ID. When a user clicks it, they would need to login to their GDevelop account and confirm the purchase, and then it would allow the condition “Player Owns Gamepass” (ID) to be true. This gamepass purchase is hooked up to that user’s GDevelop account, so that way no storage or firebase is needed to save that the player own’s that gamepass.
Note: I’m not 100% sure how GDevelop’s backend looks for withdrawing as money or as credits, but I feel like purchases would still contain the same 40% money rate, and maybe like 70-80% credit rate.
How would this look in game?
When the action “Prompt Gamepass Purchase” runs, it opens a pop up with the “Log into GDevelop” page. Once they’ve logged in, if they have enough GDevelop coins it will say “Are you sure you would like to purchase (Gamepass Name) for (Credit amount)?” and the person would need to type “confirm” to confirm the purchase (just like “delete” to delete a GDevelop project). Once they’ve confirmed, it officially adds that gamepass as “Owned” on their GDevelop account, and that person would be able to use whatever they purchased. Also, if they didn’t have enough credits when they try to purchase, it could instead show a pop-up like “Purchase 800 credits for $7.99” and bring them to the GDevelop purchase credits page.
Why add this?
I think an in-app purchase system like this would really bring a lot of new users to the engine. It’s also a way for GDevelop and creators to earn more money. This means that developers don’t have to sell their game on steam, itch, or google play, they could be making money with in-app purchases directly on gd.games!
What all is needed
Here is a quick summary of everything that would need to get added:
- Gamepass Creation System with ID
- Prompt Gamepass Purchase action
- Player Owns Gamepass Condition
- Some way to withdraw money as USD/EUR or Credits
Optional things that could be added, but are not a necessity
- Small commission if you sell someone else’s gamepass in your game
- Description for gamepasses where you can write about what’s included in it, and players can read before purchasing.
I will update this if I get any more ideas. Thanks for reading through all that! 