When the demo begins (for SoulSilver), you are out on a route with a Pikachu behind you. One of Professor Elm's lab assistants walks up to you and hands you an item, which I think was probably the PokeDex. A Totodile is also on your team. Other Pokemon available in the demos (going by what was in the PokeDexes) are Steelix, Lapras, Snubull, Cyndaquil, and Chikorita. I liked the sprites for all of them; Steelix definitely had a new one, but I can't remember if Lapras did. If it did, the sprite was very similar to this generation's games. You can battle two twins on the route, but I forgot what they had. When you start a battle, the Pokemon that you have out with you will not emerge from a Poke Ball for obvious reasons. The remixed battle music sounded like the original but also felt new.