Rollercoaster Tycoon 1 & 2

They got to 66% just 20 days ago. Wasn't that close enough?

Last sale it was on 50% off the whole time so I doubt it.. But who knows, maybe RCT3 will get on daily deal/flash and this will get discounted as well.. If you're in no hurry, wait for the last day of sale and buy it then if it won't go lower, simple ;)

Not to be this guy, but I would advise buying them on GOG instead.

As mentioned they have one on sale reduced by 66% and I doubt they will get any further ( at least until release of the new one somewhere in 2015/16) , cause they are very popular and still available in stores

I've purchased the RC: Deluxe with 50% discount, and I don't think it will go lower than this on steam at this sale

i purchased them for full price once they came out. if you want them for nostalgia's sake, just buy now!

and there you go 70%. :D