"Be careful. I downloaded the AppDoze version and my antivirus flagged a 'riskware' alert. Not worth the free price." –
The filename carries a specific modifier. In the Android ecosystem, "AppDoze" is a label associated with a particular group or website that repackages and shares APK files. Typically, an -AppDoze-.apk implies: Knots 3D v9.6.1 -AppDoze-.apk
If you have downloaded the Knots 3D v9.6.1 -AppDoze-.apk file, standard installation applies. However, because Android restricts installations from unknown sources, follow these steps: "Be careful