In indie mac gaming, it is very very common for people to distribute unsigned mac games. We mac gamers have an easy way around that, which is a simple bash script (see below). All that is required to make it work is that it be rebuilt to 64bit OS X target, it is not necessary to update the actual version of OS X that it is targetting nor to properly codesign the bundle.
[[fixapp.command]]
```bash
if [[ $# -gt 0 ]]
then echo "...$1"
echo $1
else
echo "correct execution format: 'sudo fixapp.command ~/Applications/App.app"
fi
if [[ "$1" ]] ; then
echo "fixing app"
sudo chmod -R 755 $1
sudo xattr -dr com.apple.quarantine $1
echo "launching from app"
open $1
exit
else
echo "error"
fi
```