hey, I found a good sweep vertical to promote but I'm a bit confused now whether to create a Landingpage or not because the offer itself already has a "proven?" Landingpage that looks like this: (I used a VPN to access it and made a Screenshot)

I also downloaded the Landingpage archive from Vortex but all LPs look similar like this with same elements (social proof, etc) so my question is what Landingpage can I use now before this "spinning" Landingpage?
Offers that have such built-in landers, can sometimes work directlinked ... but in most cases, adding another one into the funnel can help to motivate the users more ... but try to use something different, something to give it a feeling of exclusivity, some kind of "private offer" notice or an age check etc ... Running a test will tell you more though.
When offers have own pre landers then often there are two versions of the offer available.
One with pre lander and one without.
I take them as two separate offers then and test them both.
Sometimes the pre lander from the offer is already good enough, in your example with the wheel of fortune it's even a well known lander style.
But sometimes it converts better when you ruj an own pre lander before.
I also have several other reasons to use pre landers or kind of pre landers when offers have own pre landers.
In the end you never know and as usual it comes all down to testing.
You can also test by putting a super-simple lander before that pre-lander - for example, something that has the same look-and-feel, that says "win an iphone - select your favorite iphone color", then when they select a color and click to the pre-lander they get a chance to "win" that iphone (or whichever the prize is that the offer is associated with). I've had some good results with this in the past, but obviously YMMV.
Amy