The "prestige" mechanic is quite lacking. You just move to a new map and do the same thing, with a multiplier bonus. No new mechanics open, no points to invest in some kind of "skill tree" or similar. Buggy as well, devs just want you to watch the ads for money. If you do play, I reccommend you only use gems for high tier advisors, anything else can be done through in game currency/materials or ads.