- Site Description

BrainDen is a vivid website devoted to fun and mental stimulation. We have over 10,000 brain teasers and new ones are submitted by our users each day. We have also large collection of interesting optical illusions, paradoxes, games and jokes.


BrainDen attracts more than 14,000 visitors each day with around 60,000 page views daily. We have international audience (majority from US, UK and Canada) mostly with college or higher education.


We can set up a campaign to fit your very needs. For instance, your 300x250 banners can be placed on premium places across BrainDen using cost-per-impressions (CPM) model. Specific terms and conditions can be agreed on individual basis. Reports including all details (impressions, clicks etc.) will be automatically sent to you. Serving and tracking of ads will be provided by Google AdManager. Don't hesitate to set up your advertising campaign on BrainDen by sending us your requirements.


You can reach us at
Looking forward to promoting your brand to audience of this website.


Have you seen our collection of Optical Illusions yet?

If you like these brain teasers then feel free to share them with your friends.