Hey all! After recent playtesting a number of changes to UFO Wave were made to improve gameplay. This resulted in some additional and modified prototype cards having to be ordered. The most significant change is two new types of Energy card called Constructive and Destructive. Rather than gain or lose you ET points, these allow you to draw an additional Plan card, or force you discard one. Their introduction into the game increases the choices you'll be making when deciding which cards to claim from the Scan.
And talking about the Scan, look out for a new video looking more into this soon!