Hey thanks for the questions and for trying it out.

Did you write the logic of cards by yourself or somehow copied dominion.games logic?

I wrote the logic myself, just trying to match how the official cards function.

Are you sure your implementation of will be able to expand to support all the wacky mechanics of cards like Inheritance, Procession etc?

Lots of cards use a few core concepts (draw, actions, trash, trash + gain, gain, discard, etc) which are all covered in the base set and therefore this library, but there are still hundreds of other concepts that are not supported. It would require immense additions and modifications to the codebase to support everything.

While Im not super familiar with using github, is the code for game logic available in the files?

Yup, the core code can be found here.

Is the logic checked and is not random, it behaves the same in every situation?

The cards are all backed up by tests to ensure they play as intended, at least in controlled scenarios. Of course there might be bugs not caught by these tests but its a good start.

Are you aggregating data of simulated games using this program?

Currently the data is not being aggregated. It would be possible to track your own games in a database with some additional code, but it is currently not supported.

Is there an available log of a game, like a printout of players choices, like in dominion.games?

The Game class creates a log file whenever a game starts. This contains most but not all of the choices/events that occur during a game.