It's a good time to be a fan of the Disney-Enix crossover gloop that is Kingdom Hearts: HD 1.5 Remix is out, HD 2.5 Remix comes to PS3 next year, and then there's the small matter of Kingdom Hearts 3 for Xbox One and PS4.

Yet there's one piece missing from the series' HD puzzle. The second compilation features Kingdom Hearts 2 Final Mix, Birth by Sleep Final Mix, and remastered cinematics from DS entry Re:coded, and HD 1.5 Remix covers Kingdom Hearts Final Mix, Re:Chain of Memories and 358/2 Days, but that still leaves one major entry unaccounted for: last year's 3DS game, Dream Drop Distance.

The matter hasn't escaped the mind of series director Tetsuya Nomura, who told Famitsu (via Kotaku) it's something he feels Square Enix needs to consider.

"The HD remastered games are a summary leading up to Kingdom Hearts 3," Nomura said. "It'd be sad for one chapter not to be in HD in remaking the series, plus Kingdom Hearts 3D is a necessary piece for telling the story of Kingdom Hearts 3, so I've been telling myself that we need to start considering it."

Of course, its HD-ified inclusion could be anything; it could be reduced to remastered cinematics, or get its own fully-fledged console port. It's hard to predict the future for a series that's prepared to name a game 358/2 Days - or HD 2.5 Remix for that matter.