UPDATE: New install method through addon.
Bite Your Idols! has contacted me to present the next project that particularly think all of us will enthuse. It's about install through SSH or addon a bunch of emulators and games in OpenELEC. We already knew several solutions to achieve that, but I think this is the best of all alternatives.
You have three options:
With an addon that you can download here.
You can use an image with everything you need available at MEGA.
Run the script with the following command, always SSH:
wget --no-check-certificate -O /storage/installer-menu.sh https://raw.githubusercontent.com/bite-your-idols/gamestarter-openelec/master/installer-menu.sh && sh /storage/installer-menu.sh
Link: github.com > Gamestarter