Wow, I've been on this site for a good third of its existence, and that's not even counting all the years I browsed the front page without even knowing what a forum was. Happy Birthday, TSS. I've made some great friends here.
Lost World for me was really close to being something I liked, but I had a lot of small issues with the game that made it frustrating to play through. For example, the fact that momentum doesn't carry well. Actually, the controls and how Sonic handles needs tweaking in general.
and for the love of god, please never put stealth levels in sonic games
Can't say I expected to see Lost World ported to Steam, but I'll probably pick it up sooner or later. Hopefully after some mods make it play more like a traditional sonic game. I'd love to see some of the problems I had with it fixed up, in addition to the possibility of custom levels.