Template:Infobox Kingdom Hearts HD 1.5 + 2.5 ReMIX (キングダム ハーツ HD1.5 + 2.5 リミックス Kingudamu Hātsu HD 1.5 + 2.5 Rimikkusu?) is a collection of four games in the Kingdom Hearts series remastered in high definition, previously released separately as Kingdom Hearts HD 1.5 ReMIX and 2.5 ReMIX, developed and published by Square Enix for the PlayStation 4. It was released in Japan on March 9, 2017, in North America on March 28, 2017, and in Australia and Europe on March 31.
Like the original collections, 1.5 + 2.5 ReMIX features four games in fully-playable form as well as a Theater Mode retelling the events of Nintendo DS titles 358/2 Days and Re:coded. All content has been up-scaled to accommodate the PlayStation 4's capabilities, now running at 60 frames per second. Numerous other criticisms have been addressed in 1.5 + 2.5, such as long load times now reduced and large subtitles now resized in order to better suit larger resolutions. Though all trophy lists remain the same, they are able to be obtained independently of the original PlayStation 3 collections' trophies, resulting in the addition of four new Platinum trophies. Additionally, a free patch added a Theater Mode for Kingdom Hearts Final Mix and an extended scene for 358/2 Days to include the fight between Roxas and Xion. The games playable in the collection are as follows:
- Kingdom Hearts Final Mix
- Kingdom Hearts Re:Chain of Memories
- Kingdom Hearts II Final Mix
- Kingdom Hearts: Birth by Sleep Final Mix