I finished playing the game... I found the frogs... Do I regret it? Nah.
As it says in the title, there are 100 hidden frogs in a picture, and the goal is to find them all. Pretty much like how any hidden object game would be.
The art (made by the developer of the game) is one long, black-and-white vertical drawing of a cartoon riverside/marsh scene with a lot of hidden frogs. Not gonna lie, I respect that effort.
Also, I like that even if it's one big scene, one can easily divide it into smaller sections visually, making it a little easier to find any frogs you might have missed in your first look from the top to the bottom. Still took me a while to find the last frog, though, but that's okay.
It's a pretty short game, and so it only has two tracks throughout the whole time you're playing. One of them plays while you're looking for the frogs, and one plays when you've found them all. I don't think there was even much of a focus on this, and rightly so, since it's a hidden object game, after all. The focus is looking for things, and not listening to things.
It's pretty much one of the simplest hidden object games that you could play, outside of those in children's activity books. There's no hints, no timers, not even multiple levels, just plain old searching for and clicking on frogs and frog-like things.
To help you, there's a number there, showing how much more you need to find. And also, when you click on the frogs, they get colored green. Other than those, and possibly the background music, there are no frills.
However, I gotta mention that it's funny how every frog in the game has an achievement tied to it. They're all named "Frog", and the only descriptions that they have are "ok". So while you're playing the game for the first time, you'll get a lot of Steam achievement notifications.
If you get the urge to play a hidden object game, this is one of those fairly solid choices that pretty much just gives you what's described on the title. After that, well, you can choose to play another game, and that's okay.
You can get it for free on Steam.