This game is awesome but I have one major complaint. When your auto logged out you can't log back in without reloading the whole page. Maybe adding a re log in screen would be a good idea.
So I was running just fine, unsure of how far I was only knowing that the number under extinction was close to 5k when a massive hill confronted me with two giant meteorites trying to roll over me. I couldn't duck under them and I couldn't jump over them.