A one-tap stacking game
Stratospire
A carrier swings a floor in from the side. Tap to set it down. Carry the friends who hop aboard up to the age they want.

Tap to stack
Line the floor up and it lands perfect. Miss, and the overhang is sawn off. Three perfects in a row and the builders widen the tower back.
Carry and deliver
Chicks, cats, cows and commuters hop aboard. Each wants an age of its own, from the forest log to the crystal spire. Get them there and they move in.
Today's Tower
Once a day, the same tower for everyone, with its own leaderboard. Three hearts, no second runs, bragging rights until midnight.