How to fill an object with groups ?

All im trying to do is to fill a hollow object with 8 sort of objects which is a group.

So i made a group with Ctrl + G and then added a particle emitter to the object i want filled with the group.

Then i add the group to Duple Group ander render in the Particle tab.

Am i missing something ?

Can someone explain step by step how to fill an object with a group of objects and so they don’t go trough the object.

Appreciate any help.

If you don’t want them intersecting with each other you’ll have to use rigged bodies in the game engine, not particles.

I did try the game engine but i have to many objects,

How can i use particles ?