Below is the old school runescape world list, which includes the theme of the world beside it. This is an unnoficial list of theme worlds posted by Elf Carantir via the runescape forums.
 Themed Worlds Index
Last updated: w14 w30
|04||Fletching trades at Seers' Village|
|14||Barbarian Assault (when enabled by Jagex)|
|30||House Party / Gilded Altar (if any)|
|33||Pest Control 1|
|34||Castle Wars " ..... High-alch on the wall|
|41||Law altar ess running *HOT* ..... (26 unnoted for laws+pure ess)|
|44||Pest Control 2 *HOT* ..... Chats: Lip Locked,|
|44||Nature rune crafting (see Runes & Ammo market forum for ess running worlds)|
|50||Fight Pits "|
|58||Blast Furnace "|
|77||Shades of Mort'ton / Rat Pits / group questing|
" Note that some minigames are better played with trained accounts (cmb/quests) These w might not be fully running yet until larger group of such players is readied.