Sonic Unleashed Easter Egg - Other Sonic Game Reference

In the Night Empire City Mission "A Rising Star", you start on a building, of course. If you look on the only wall, you see a very bright yellow neon sign that says "SOLEANA HOTEL". Soleana is the main setting in the first next-generation Sonic game, Sonc the Hedgehog (2006). If you go across the building by using the slide walk bar and look at that wall, you'll see a green neon sign that says CHAO BEANS". As most people know, Chao are cute little organisms that are kept as pets in the world of Sonic.