As already suggested I think theHunter is what you want, available at theHunter.com

Beside state-of-the-art graphics it is really realistic, especially compared to the Cabela's games. You start at a lodge of choice and then it is up to you what to do in a rather massive world. Find tracks, stalk, make sure to use an ethical weapon depending on animal you're hunting and harvesting is a must. If you by mistake wound an animal, that then flees, you must track it (otherwise you get a reprimand by one of the in-game characters).

Unlimited free play let you hunt mule deers. A membership gives you access to additional areas areas and more animals like whitetail, elk, feral hog, turkey, coyote, and more. Simply sign up at www.thehunter.com and download the client and you're ready to go on a hunt.