...and not feel inadequate at the annual giant picnic.
Laugh point dude. Thanks.
I have ran giants, trolls, titans, etc. As GM, you will have to house rule the hell out of it. For example, do giants deliver the same hit multiple against each other?
If you care, i subtract damage multiples when such foes fight. A PC with x2 hits fighting a foe with x3 hits will do normal hits, while the x3 delivers x2 hits.
You can apply this rule with crits too, but it gets complex. There was a table in the old Arms Companion.