Skyrise
When do players choose and reveal their Wonder cards?
The rulebook's Choose Wonder Cards step says players reveal them simultaneously.
- Skyrise rulebook · Rulebook · 3. Choose Wonder Cards
At the end of Era 1, before Era 2 starts. Each player chooses one of their face-down Wonder cards and all players reveal them simultaneously. In a two-player game each player chooses and reveals a second card for their second Wonder.