My mentor’s site filled with valuable information regarding programming and graphics.

Blog of Michał “Ragis” Król – great designer and my friend. He has a deep insight into game design and gamedev industry.

Source of many gaming- and culture-related information. Worth reading on a daily basis.

A real mine of game development industry information. A must-read regularly.

If you’re stuck with any programming problem – you’re going to find a solution there.

Great analysis about sales, marketing and discoverability of games.