Like many of you, I was bummed out that the official port of Serious Sam 2 stopped working on newer Android updates. I spent the weekend messing around with different patches and managed to compile a version that bypass the OpenGL errors most people are seeing.
If you are looking for the "fixed" version to emulate, the on Steam transformed the game with: download serious sam 2 for android fixed
The official Serious Sam 2 (the 2005 PC sequel) was never officially released for Android by Croteam or Devolver Digital. The version you’ve seen online is an unofficial port or modded APK based on the Serious Sam Classics: Revolution engine. Because of this, you won't find it on the Play Store. You must side-load it. Like many of you, I was bummed out