NOTE: Using the development version of the game could hamper your experience with the game, with some unfinished assets available. However, we would greatly appreciate your feedback. Feedback can be submitted at feedback.arma3.com.
Want to be apart of the ArmA 3 development builds? Follow these 5 simple steps:
1) Open Steam and go to your game library
2) Right click on ArmA 3 Alpha, click Properties
3) Click on the BETAS tab
4) Click on the drop down menu, choose development - Development Build
5) Click Close
Congratulations, you are now in the development build of the ArmA 3 alpha!