I use it for my interactive-fiction backend and to host save files for another game.
Nothing fancy, just a web server getting file and saving them. Like a KV-storage.
I have deployed it to dogital ocean on 2017. I have not TOUCHED it since then. Still running good. And I can access the Pharo GUI via the web VNC just from my browser with full access to the IDE and dev env.
The cons: I forgot how to run that docker image. If it fails I am in troubles reminding myself how to run it one more time. 6 years have passed...
Some of us (me, for example :) have to spend multiple weeks a year to draw the design architecture of certain parts of the product. During engineering meetings everybody raised the same question: i commit to new area in product, how can I understand what are the components and how to do certain things? You can ask your colleagues but they might know it as well.
So I decided to document main flows and designs in PlantUML diagrams. having these diagrams greatly improved onboarding process, cause you can quickly glance what component does what and what are the dependencies (the code base was in JS, so it is usually quite limited on refactoring/figuring out wtf is going on).
But the problem with such approach is: diagram quickly gets out of date. Someone makes the change and the diagram makes no sense at all now. With what I saw in Gtoolkit, you can always query the real source code and build custom dev tools that always produce current and real overview of the system. I would love to have a starter kit for JS projects that you can drag and drop and start building your own tooling for your product.
I am still in love of Settlers III and IV. I used to play with my sister via some direct LAN feature. Still remember how she gathered shitload of level 3 generals and I discovered that by using spies. I placed spies in the forest directly behind the tree. He was not visible until the soldier comes nearby. In this way I found her huge army. I gathered 40 elite vikings and did a special operation: 4 ferries dropped them just into the heart of her kingdom: mountains. I was able to completely destroy her economy before she could return her army. Then my looters took everything and she lost :D
Settlers V was naahhh and their latest browser based game was a disappointment as well.
I have been using Pharo as the backend for my turn-based game. It is such a relief to have the always ready live environment. Together with Flutter (another live env) I can create new backend services in a matter of minutes. For example: in Pharo I just add new field to the response. In Flutter app, without any restarts, I debug the REST call, check the response, modify my inner objects to accept this new field and boom, client and server can talk to each other again! Plus in Inspector I can watch the data changes after each REST calls. I do not have to issue an sql query or stop server in debug mode and recall the REST in order to catch breakpoint. The Inspector window is always there!
All this is done without any restarts of the server/client app. I have even created a smalltalk-to-dart code generator: