R is a twisted psycho-philosophical platform/puzzle/action/adventure game created from Michal Marcinkowski's discussions with Dolny sometime in 2004 and 2005. The game is not finished and never will be.
There are whole sections of the game not done, missing graphics,animations, sounds, maps and cutscenes. However the game is complete in its design and is fully playable from beginning to end.
So don't worry about the missing maps, it'll just make you finish the game faster and enjoy the magnificent ending.