I am working on a project by myself, so I may not have enough time to create all the sounds for my game. Also, I cannot voice the characters because of my voice and my poor English skills. Is it okay to use NPC voices and SFX from other postal games?

You can use assets from our games. However, we may award more points towards other projects if they use more original assets.

Well, I wanna confess that I'm actually using character meshes from POSTAL Redux, editing them a bit. I know, less points, but they fit just fine.