With all of the above being said - it is rather difficult to find sites that are "DoFollow"...however, they are out there! Listed below for your convenience are running lists of multiple categories of sites that are DoFollow, and great candidates for your next backlink!
In getting links, regardless of if they're DoFollow or not, please note that Google and other search engines are rather smart these days. If you have multiple links pointing to a page from one DoFollow source, or if that source is also linking to other places that are giving you backlinks (such as your Blogspot or Wordpress account), search engines will notice and may devalue your links to the point where they become worthless. Build links naturally and over time. Provide value and they'll be quality links. Otherwise, you'll hurt your website's link building efforts in the long-run.
By the way -- when it comes to link building, only the first link pointing to a site counts. Posting more than one hyperlink on the same page to the same source won't help in any way.
These are the best dofollow sites that I choose for game related blacklinks.
I have just created this list of DOFOLLOW gaming blogs / Do Follow Games related websites.
You can get free backlinks, better SEO, better Alexa Rank and better PageRank by commenting the dofollow blogs below:
Spamming Dofollow resources will not give you results...not only that, it hurts the entire community, and it persuades Dofollow providers to convert their sites to Nofollow. Be sure that all of your link-building exploits are done so tastefully and honestly. If you don't cram keywords and give an honest account of what your site is about, search engines will reward you for it!