What do the loyalty and happiness boosters do

spore

I understand that they boost happiness and loyalty, but I have absolutely no idea how. When using it I don't see any change with the happiness of the colonies, whether they were happy or unhappy beforehand. Also, I didn't even know there was such thing as loyalty before I saw this item. I don't think it can be loyalty to other empires, because I'm pretty sure you can't place building on other empires planets.

Best Answer

Well taken from SPORE wiki

The Happiness Booster keeps colonists happy and can prevent an uprising

As for Loyalty Booster. This tool prevents colony planets with unhappy cities from striking, allowing you to max out a planet's spice-mining efficiency.

So in conclusion both high Happiness and Loyalty doesn't let your colonies to start riot and uprising and helps with production of spice.