 0: The name &quot;Sonic 2 Ultima&quot; is already taken<br>1: by using it. It&#39;s not hard to figure out.<br>2: Hex<br>3: You can use tile editors in SonED or ESEII. or you can use a combination of hex and TLP.<br>4: you don&#39;t<br>5: <a href='http://ssrg.shadowsoft-games.com' target='_blank'>http://ssrg.shadowsoft-games.com/</a> and <a href='http://hacking-cult.org' target='_blank'>http://hacking-cult.org/</a> are good places to start. 