Tsietisin

I have a few machines in my mind and I cannot remember the names of them. Maybe someone here can help.

First off, a machine, £8JP I believe. The thing I recall most about it was Red or Blue 7's was the jackpot, but Mixed 7's was the next highest win at £4. You still had all the other usual symbols on the reels as well.

Second, a more recent machine, Sort of reminds me of grid runner. Coloured balls in a pile, you gamble high and low to get the next one fall out the bottom and add to that trail. Began with a P I think

Lastly, Older machine. and there are two possibles. Numbers on the reels added from both sides of the trail. Depending on how far along in one direction it got one way or another, the better the prize or feature you started with.

Also, similar to above, numbers counting back, made you start higher in levels on a pyramid type structure.

So any idea on any of those?