Why this niche persists Three forces keep the obsession alive: nostalgia (routes that recreate cities from players’ youth), the low barrier to entry for creators (basic modeling skills plus a love of detail), and the satisfaction loop—download a tree, place it on a route, step back and feel the world shift from plausible to convincing. OMSI 2’s moddability invites incremental craftsmanship; a single improved tree model can elevate an entire kilometer of route.