There is no end of ball bonus if you drain from the upper PF..actually there is NO bonus at all actually from the upper PF after a drain...
The only bonus scoring available comes from the lower PF..
Now if you complete all of the drops in order (BLACK) and (HOLE) in the Upper PF,you light the G-Force accelerators, the first one lit is double scoring, and the second lit for completing a second bank of targets, is triple scoring.. meaning each switch scores accordingly to the G-force that is lit... ie. double scoring or triple scoring from each switch hit..
completeing the upper 3 rollovers will give you 2x,3x, and so on, but if you drain up top it awards nothing other than the points scored during regular play / earned before you drain... ( as single switch scores)
Say you light 3X by finishing the upper rollovers twice, then go to the basement..without either G-Force lit..what ever you score, will be multiplied by 3x accordingly... if both G-forces are lit (trplie scoring) for each switch hit on the lower your bonus builds thre times quicker, and then at bonus countdown that is multiplied by your X factor...
you can add to or accumulate 2x, 3x, etc by shooting the advanced multiplyer loop on the lower PF too.. untill you max out at 5x...
The key is, if you can, take what ever x multiliers you can, and complete the Black and hole banks to light the 2 G-forces up top,.. then go to the lower, and concentrate on dropping the white 3 bank of drops right away, to ensure re-entry, then hammer away at points to build bonus, and or till you lock down there, rinse and repeat...
During MB, i dont worry much about the upper ball at all, i just try to keep the lower 2 going, as long as possible, cause the upper doesnt kick out till you drain down below, once all 3 are up top, its drop target fest as much as you can, once drained to 1 balls then try for the lower again, to rack up the triple G-Force as much as possible...
very fun, and it takes quite a bit of set up to get all this where you want to get a good score...
Devils Dare requires alot of set up as well to get it all working together for a maximum scoring opprotunity...
BH, and DD, both are like stacking rules rather than stacking modes.. but it is the same premis..
wicked addicting
Hope this wansn't too redundant.. but thats it..