Please create an iCloud Sync feature category, and have all games that include the 'sync across multiple devices' feature included in this category. I almost exclusively purchase games that use this feature so having this category would make searching for games very simple.
While I can't speak for TA, I'm trying to work with iCloud metadata myself, and it's not as easy as it looks. Apple's servers don't actually include any iCloud compatibility metadata for apps. There is no way to automatically know whether a game is iCloud compatible using Apple's lookup API. Same with MFi controller support, which is the one I've been trying to work around. If TouchArcade were to build an iCloud compatibility database, they'd need to do it completely by hand, cataloging every compatible app.
Hi thanks for writing in. For now I just do a search with the term iCloud. Perhaps if Touch Arcade were to do this at the start and then include games that describe 'icloud sync' in the description to the category as new titles are released?