This is the Retrobooster Demo 0.6.5-1 for Linux in a .deb package.
This package contains a 32-bit game that will work on 32-bit or 64-bit versions of Linux. The game may fail or behave poorly on 64-bit Linux if you have not yet installed 32-bit compatibility packages for your video or audio backends.
> dpkg -i retrobooster-demo_0.6.5-1_i386.deb
> apt-get -f install
Or go to Applications->Games->Retrobooster Demo