It's the newest one that came out just today, with the little ghost in the maze. I got the to fuel and everything, but nothing is happening in the mini-game now. The ghost is still roaming and probably got me by the time I am done typing this. Am I missing something?...

did you try refreshing the page?

If the ghost touches you or the fuel then you have to refresh the page and start over. If you don't refresh after either of these things happen and try to collect the fuel anyway, nothing will happen.