Twilight Imperium is a massive commitment. You are looking at a six to eight hour session. You play as alien races fighting for galactic control. It involves politics, trading, and massive space battles. You will spend hours negotiating deals and inevitably breaking them. The sheer scale of it is intimidating. You need a huge table and dedicated friends. It is an event game. You plan a whole Saturday around it, order pizza, and dive in. It delivers a rich narrative that your group will discuss for weeks afterward.