World of Guns is an interesting game in which you get to disassemble, and reassemble guns. At first, I looked at it and thought "There is no way I'll like this.", but then I started playing it. I thought, 'Why would I want to do that?' almost every step of the way, after all, it's just taking bits out of a model and then putting it back together.
Well, it turns out that if you have a few minutes to spare while a friend is off doing something, or half an hour before going to work with only boredom to keep you company, the prospect of a gun model to pull apart and put back together is pretty pleasing.
Most things appear at first to be accessible with no payment needed, and a few that you can get by being the daily top score on a gun. It's free, so that's great value already, and you get hourly quizzes for bonus exp(Used to unlock more guns).
So then, how does it play?
You can field strip a gun, taking apart only bits of it, and then putting it back together
You can disassemble and reassemble a gun, which is doing the obvious
There is a simulation of how the guns work, with slow down, x-ray vision, and multiple magazines and assesories you can use
After you completed those, you will unlock the 'game', 'supergame', and 'hardore game' modes.
Game is a time attack, you have to disassemble and then reassemble your model as fast as possible, with bonusses for not clicking too fast and not clicking any part that you aren't going to activate. (Hint: Spacebar activates whatever you have selected, this will help your time a lot. You can also turn off the auto-zoom to selected parts in the options)
Supergame is also a timed mode, but now you get to time your activation a second time on some parts. If on time, the part moves out faster. If not on time, it's slower. You get a bonus for not clicking too much.
Hardcore game automatically activates any part you click on, and you can activate multiple at once. This is where things get fast, with large amounts of bits, pins, screws, and all sorts of springs flying all over, you'll get a bonus if you don't click anything you can't activate
And in all this, you will become very familiar with what I have called the "Ikea effect". Namely, there will be one or two little screws or pins somewhere that you can't find, possibly having vanished into the ether when you weren't looking. Luckily it isn't modeled on reassembly, so you won't have to worry about a spring rolling under somewhere and disappearing into an alternate plane of existence
Gun enthusiasts, you probably already have this. But if not, I recommend it to you.
Others, if you enjoy score-based or slightly competitive - With the whole playerbase or just between you and friends, this may be a good choice
But aside from that, if you just want to grab something simple to spend some time on between things you're doing, this is a great choice. The small size means its a fast download and the short gamemodes means you can spend as long as you want on this. But I'll warn you, perfection on a model may take a lot of time
(I would also recommend a youtube search for LethalFeline, he has videos up of him playing if you still aren't sure)