Title: WhatsWrong
Year introduced: 2018
Country of origin: Germany
Languages: English
Price: free
Simple game of spot the difference between two pictures - something that can hardly be called challenging or original. Unless the author actually comes up with an interesting angle to the original formula, like in this case. The differences between pictures are sometimes very obvious, sometimes really difficult to spot, but what makes it really challenging is the time limit to find all the differences, which puts even more pressure on the player.
With each second the time limit bar gets shorter, unless you will find a difference, this will buy you some more time. On the other hand, click on the wrong spot on the picture, where there is no difference, and you will get a time penalty. There are between 3 and 5 differences in each pair of images and with a ticking clock in the background, it really is quite difficult to find some of them.
A very simple game, based on a classic concept, but with some extra elements added, which turn it into something more and makes it fun.

Casual online game centred around geography - guess flags, shapes of the countries and other details.

Geography game, in which you are dropped somewhere in the world in a Google street view and all you have to do is guess where the heck are you.

Geoguessr clone with one difference - it is free. Well, few differences, actually.

Unsolved case files free online game
Challenge yourself with those free unsolved case files - do you have what it takes to solve them?

Online detective game
Can you solve this murder mystery?
Website dedicated to sitcom Caroline in the City (1994-1999), starring Lea Thompson, Amy Pietz, Malcolm Gets, Eric Lutes... visit
GSC Game World, the company behind Stalker 2: Heart of Chornobyl, just introduced a new game in the universum and at the same time they invented a new genre of the games. Or rather, meta games. Introd...
It looks like production of anticipated Stalker 2 game from Ukrainian studio GSC Game World was just postponed indefinitely.