It seems Koei Tecmo doing well for themselves
http://neogaf.com/forum/showthread.php?t=1040392It should be noted a couple of things
" Koei Tecmo saw revenue increase for the second consecutive year and operating profit increase for the 5th consecutive year, up 35.2% YOY. Total sales revenue reached 37,799m yen which was up 0.6% YOY. Game Software still remained the biggest segment for Koei Tecmo with Online and Mobile in a comfortable second place. Combined, these two segments account for more than 31,600m yen in revenue.
Total sales revenue in Japan decreased 4.6% YOY but still accounted for 79% of total revenues, 29,876m yen. Sales revenue overseas was up 26.4% YOY and accounted for 7,922m yen. North America and Europe saw the biggest increases (42.8% and 40.8%) whilst Asia was down 8.6% YOY only accounting for 1,763m yen compared to 2,431m yen in Europe and 3,728m yen in North America.
The total operating profit ratio was up 6.5 points to 25.5%. "
So it seem spending for consumer games still going down in Japan but strong offering this past year helped for overseas consumer games. f2p DOA5 and downloadable content is making them money and they'll be doing more mobile stuff
I think they benefit heavily from running the same engines into the ground, also, for their games (Musou, Atelier)