Played a weird game on Cloud Kingdom, ZvT. My drone scout was killed his SCVs before I could see whether he had taken a gas or not, so I was on edge. Luckily my overlord reached the back of his base shortly thereafter, at which point I scouted both gases taken. This was around the 5m mark so built extra queens and got my evo chamber at 6m, preparing for cloaked banshees. They never came, then 4 super later Hellions appeared. I figured what the hell, maybe he's going mech...so I took my third.
Few minutes later I scout him taking a late third, then my mutas fly past like 7 Ravens lol. He turtled on three base and had the entire area guarded with missle turrets so I couldn't scout. Still expecting mech I took another base, got a lair around 17m, got a bunch of Ultras and a few Blords.
....then I saw him leave his base with a billion 3-3 marines. Luckily I had a couple Infestors, but even if I didn't I'm sure I would have held. I crushed the army, a-moved to his base and found like 4 PFs. Won easily but jeez, what a weird..build. Usually when Terran turtles on 3 base with a bunch of hellions, they hit with a billion Thors. At least, that's what I've seen multiple times. I've never seen someone turtle just to mass marines and Ravens.