Metavolve
Turn Example:

Player draws a card, he may play an event card, and change the current event
( usually consisting of how Metavolves work)
or may play a character on a slot / sector.
Each player card reacts differently to different character types indicated by their type symbol, if two scientists meet for example they might advance technology for finding a cure,
but if a soldier meets a physicist they might advance weapon technology, etc.