Is ARM only allowed for SaaS at Genymotion?

No. ARM is not limited to SaaS, but SaaS is now moving to arm64 only for Android virtual devices. Genymotion Desktop also supports arm64 on Mac M, while PC and old Mac Intel use x86/x86_64, and cloud devices on Cloud providers run in an ARM environment with ARM64 servers (Genymotion SaaS is moving to arm64, I can't install an application/game in Genymotion Desktop, Interactive Engagement).

SaaS will restrict x86-based virtual devices on March 30, 2026, so ARM/arm64 is becoming the standard there. Desktop and cloud offerings still exist with architecture depending on the product and host platform.