Secondly, this 2025 Monster Manual is much bigger ... especially for a DM who's already more or less memorized the 2014 5e MM, but the way it's laid out makes it so much easier to access the ...

and now Monster Manual all introduce new gameplay elements and tweaked rules, they are also backward compatible with 5E materials, including all rulebooks, adventure modules, expansions ...

For the most part, I'd argue that they're a subtle but noticeable improvement with better subclasses, way more help for DMs, and the rough edges of 5e filed off. The 2025 Monster Manual continues ...

Looking to get your hands on some of the adventures from last edition? D&D Beyond's Spring Sale might be just the ticket.