Well, it would simply be a matter of modifying the level files. Now that I've finally decided to make sense of how exactly Lemmix shares its code across several versions within one folder (previously I had been keeping a seperate folder for each different game), I'm adapting NeoLemmix to take full advantage of this as well. Or should say, I have adapted - I currently have it compiling Orig, OhNo, LPDOS and LPII all out of the same folder - still have to add H94, CustLemmix and LPII Bonus (but I've modified the resource builder to accomodate these).