Download Windows.net (I think you need the x86 version) from https://dotnet.microsoft.com/en-us/download/dotnet/7.0/runtime?cid=getdotnetcore...
Then run app.exe normally. It will launch its own little command prompt window. I think this game is inspired by Bitburner.
So I've been playing a bit, and want to comment on a few things.
The game seems to focus on a simplified Unix command prompt. It's not as robust as DOS. You have to type just the command with a dash in front and then press enter. Then you have to type out the name of what you want, spelled correctly, and case sensitive (without the dash). It took me a bit to figure this out. For example, type "-buy" then enter, then type out what you want to buy. I guess it's okay if you're learning how to type and want to practice accuracy. As far as money goes, I don't see any way to earn it besides buying and running the first shop upgrade. You can run multiple instances of a program, but I'm not sure if that speeds up income either. I think it does. You can use the up arrow rather than type out the program name each time, but it does still become rather tedious. Bitburner let you specify how many instances of a program to run. I don't think you can do that. This game would be alright if some quality of life features were added. Also I don't see any way to upgrade from a single core, or what the limitation is, maybe something you can do later in the game?