muntdefems: I'd hate to be right, but after taking a closer look at it, this campaign is starting to look fishy to me... The description mentions a prototype made during a game jam that is allegedly downloadable somewhere, but I can't find it anywhere. Plus, everywhere you look (Kickstarter, Steam Greenlight, the game's 'official website') you'll find the same exact few screenshots and animated gifs... :\
I've looked around a little, and the first (German) website I found regarding the subject mentions that the original (?) name is "Schiaffi & Fagioli", (slaps and beans in Italian), which is what one should look for...
I did just that, and found this here link:
https://lochiamavanotriniteam.itch.io/schiaffifagioli , where there is an actual demo to play.
There's a big disclaimer ("This is not an official "They Call Me Trinity" and "Bud Spencer" and "Terence Hill" product.[...]", the linked facebookaccount however does link to the official kickstarter...
Make of that what you will, I just thought I'd put the info out there ;)
ETA: Checking out youtube also provides a couple of videos with gameplay footage from the demo, such as
this one here.