[mGGPrometheus]

Every time I see zerg put down a really early (~3:00 minute) gas I get really uneasy, because speed will kick in just after 6 minutes and before hellions, so I'm really in the dark as to what's going on.

A strategy I've seen zerg players use a lot is to rush for a good number (enough to kill a bunker) of speedlings and hit right as speed completes. This usually hits when I have 5 marines from a 1rax FE or 2 marines with a CC first. Needless to say everything on the low ground dies.

I reckon the best response might be to calculate exactly when speed kicks in, and blindly retreat everything up the ramp until you build up 4 hellions to move out. The problem with this, however, is that if your hellions are in your base during this time, a baneling bust could easily come and since your hellions have not been scouting the surrounding area you won't know that you needed a double wall.

So what do you guys think is the best response to seeing a really early zerg gas?