I went into the GiGO number 1 building first. And as I would find out through the rest of my trip, GiGO just stocks the same selection of games everywhere. There's always this Gundam game, a variety of rhythm games, and claw machines.
Next up is Taito HEY, and this is where the good stuff is at. The first floor has a few claw machines, and the second floor has more of them. But the second floor also has racing games, STGs, beat 'em ups and even a selection of games from other genres!
And unlike a-cho, the cabinets are more populated.