Cube2, Tesseract, Syntensity, Octaforge , RedEclipse ... free and opensource lifecycle in a nutshell

Any thoughts on the cousins of the BGE, UPBGE, Armory 's brotherhood ?

RedEclipse2 seems to be the latest brother, but i’m scared it will go full zombie just like Tesseract did. It’s sad because the Tesseract engine looks so efficient. Octaforge was even a project to make scripting possible… but ofc, no where to find any sustainable documentation on it …