I think I got addicted to Terraria first, really badly I was playing it soooo much then when I played Minecraft I got mildly addicted, as I had got some of the initial thrill already from Terraria. I had to stop since it was also taking up a lot of my time. The furthest I got was finding some Gold in an Abandoned Mine Shaft that I hadn't finished exploring. Hadn't died in lava yet, but it does seem to be much scarier generally in Minecraft than Terraria (due to 3D first person perspective).