Android emulation works better on it because the difference between Linux and Android is not that big
To be clear, the difference between Linux and Android is about the same as the difference between Linux and Fedora, in that they are both Linuxes. That's why this works, and why the reverse (running GNU/Linux apps and even entire systems on Android) is possible as well.
Everyone who has an Android phone "uses Linux without the command line." Your question, however, seems to be "is it possible to play Windows games on Debian without the command line" (edit: or, more broadly, "how suitable is Debian as a Windows replacement") which is not the same question.