Here is a set of 20 cool riddles you never expected to see! If you can't concentrate and feel tired, try out these fun puzzles to kick-start your brain! You'll get a huge boost of energy and will be productive for a longer period of time! Also, I'll be waiting for your thoughts on these brain games in the comments ;)

00:14 - This logic brain teaser will rack your brain and improve your critical thinking! Try to solve it before the time is up ;)
01:57 - A set of visual riddles that will trick your mind! Are you smart enough to solve at least half of them? Tell me which was the hardest puzzle!
03:36 - Check out this tricky riddle to test your detective skills and improve your intelligence! You need to find out who robbed the bank director!
05:30 - Best riddles to test your brain and see how good your vision is! These easy riddles will work out your brain in a nice and relaxed way. To crack these picture riddles you'll need keen eyes and also some general knowledge and logic to understand what actually should not and cannot be in these fun pictures!
07:07 - The police found out that someone was going to make an assault upon the Mayor. They knew that the criminal would attack him at the stadium during an American football game. But what does he look like? Try to find the killer before the time is up!
08:02 - What a smart guy he is! But not smart enough to trick an experienced detective like you! Concentrate and take your time to find the solution to this logic riddle. Will you prevent this fraud and save the company's reputation?
10:03 - Can you spot the mistake? Boost your vision and test your attentiveness to the details with these visual puzzles!
11:33 - An easy detective riddle even a kid can crack (of course if this kid can think outside the box!