What games should I play with my puppies / What activities should I use to train them ?

3 months old. 1 male, 1 female.
I’m thinking about starting them off early and introducing them to a series of useful physical education.
Yes, they’re very young, nevertheless they’ve got massive energy (stamina and strength).
They’re mix breeds, have no idea what of. There might be some Terrier in there.Not sure.
They’re showing quite an amount of hunting predator instinct already.
But to top it all they’re very calm in moments of stall.