My DnD hack.

[LordVreeg]

You can fight with two melee weapons at once as long as they're not stupidly big. Instead of an extra attack you get +1 to hit, or +2 if one of them is a dagger. To determine damage on a hit, roll for both weapons, then add together and divide by two. If both weapons are the same, just roll once like normal

interesting.
I actually like having a 1 handed and 2 handed value for STneeded, DXneeded, and separate damage.  But this is very quick and easy.