It's so pleasing to me seeing games from instantaction come back one after another. I hope for something similar for Legions too, I know whats the situation but just saying.
Well, the first game of instantaction which I had seen come back is Legions despite the fact that it has not the popularity that was expected.
A few games sort of came back, one way or another. Galcon got a sequel, for instance (here). Zap! got a spiritual successor known as BitFighter. Lore: Dark Horizons is a sequel to Lore: Aftermath. ThinkTanks can be purchased and played for $7 here. There's a relatively active community for the game here. No idea what's going on with the Ace of Aces / Red Baron thing. Last I heard Damon Slye still wants to make it. They released a classic pack on Steam, but doesn't include the InstantAction game.