Just a few comments about the biogenesis installer:
You don’t have to have one exe and one game/exe directive, only one will be used.
The chmodx on the jar file shouldn’t be necessary, but since you had the jar as the exe directive, it was probably useful since the whole /usr/bin/env java … was completely ignored.
You don’t need a “tested” comment in the technical notes, this field is reserved for things that don’t work out of the box or things the user should be aware of. I assume that everyone tests their installers 
The “No java wrapper” can be moved to the Technical Notes, the description is reserved to give more details about the game installer.
Other than that, it’s good 
Keep submitting installers, we need lots of them!