Cities: Skylines is a PC city-building simulator that lets you design roads, zones, services (hospitals, police), and landmarks to grow a small town into a massive city. For PC players who’ve built sprawling metropolises, what’s the biggest challenge you faced in late-game (e.g., traffic jams, pollution, budget deficits) and what strategy did you use to fix it—did you redesign road networks with highways and roundabouts, or add green zones to reduce pollution? Additionally, the game has hundreds of mods (e.g., ‘Traffic Manager: President Edition,’ ‘Unlimited Money’) and DLCs (like ‘Snowfall,’ ‘Green Cities’)—which mod or DLC is essential for a smooth city-building experience, and did it transform how you play (e.g., ‘Green Cities’ making you focus on sustainability)? Finally, Cities: Skylines II was recently released—do you prefer the original game’s mechanics and mod support, or does the sequel’s improved graphics and AI make it worth switching to?