I think it's doing okay. RPGs spread by word of mouth and sales build over time.
Per Steam Charts:
Last 30 Days 424.7 +239.1 +128.80% 1,777
May 2014 185.6 -74.4 -28.61% 392
April 2014 260.0 +205.8 +380.12% 872
March 2014 54.1 -75.1 -58.09% 156
The right most number is Peak players and the left most number is average. As you can see it's going up considerably with the steam sale.