Talk:To Infinity/@comment-27595193-20160112012510/@comment-4682764-20160112020706

You are correct in assuming that the new blocks are a texturepack. One mod that I believe was used is the Custom NPC mod (which can be found on Curse or the Minecraft Forum). As for the facehugger and alien, these were custom coded for the series. If you want to know more, make sure you look at the behind the scenes video,