True, but eventually the players you can attract is way smaller.
Let's take a mathematical approach. Element
x are your gamers. It is calculated that for pc gaming, Steam and all it's supported games (including css, cs, cod, left4dead, and so on) has about 70% market share. I've read this and i found it quite shocking, because i really had no idea Steam was such a major player nowadays, although, with the recent craze about all the call of duty games, this might be understandable.
Let's say that x=10 gamers.
x = 10
70 % of those gamers have access to Steam.
x = 7
Now i'm not going to sum up every single game that features source engine, but only the major players, 2.1 million purchases of Cs:s, 6.5 million purchases of HL2.
If you add those up you get 8.6 million players who have access to the source engine, however, the number of players who have a console instead of a pc i do not know, but this compensates with the fact that i didn't mention other small games.
Steam itself states it has about 20 million active users.
Let's calculate a bit, 8.6 million (estimated number of pc source owners) / 20 million (steam accounts) = 0.43
Now let's divide 7 to see how many gamers have steam.
x = 7 . 0.43 = 3.01 = 30.1 %
So, if you followed this little calculation, you can see that
at maximum (while this is obviously inaccurate) you can reach 30.1% of the pc gaming market with your mod.
On avarage, you can only reach 3 out of 10 gamers who are actually capable of running the mod on their pc.And i didn't even include their field of interest!
sources used :
http://www.jouwgames.nl/content/n/9061/Steam-heeft-70-procent-marktaandeel.htmlhttp://wikipedia.org