http://www.drpeterjones.com/music/
His site is 8-bit music that's really fun to listen to. (Now before everyone yells "Spammer" I wanna disclaim this by saying that I want to discuss a mini game series for Sandbox kinda like Mario and including that music

Little quests and things like that would be the main gist of it

I would want everyone to work on it. Basically like a big community project for Sandbox

Mini-Games:
True to it's name, MG will provide levels upon levels of challenges that will entertain casual gamers and the hardcore player. Game-play consists of:
A level-by-level gameplot
Fun level ups
Fun powerups
Inventory system
and much more!
Whaddya think?
Arc
EDIT: There, link back up now

EDIT 2: Mini-Games is now officially being created by Arcon Entertainment Studios.