Over half the games in the bundle are unique to this one, not included in any previous bundles. Among them:

• Highway Haunt is a nice Halloween-flavored solo TTRPG.
• Sci-Fi Tarot Card Names & Concepts is a useful resource for sci-fi settings
• The Pair, The Flush and The Power Word Kill is a Cowboy Wizards TTRPG that uses cards instead of dice.
• Brave the Dreamer is a is a GMless, Descended from the Queen story-building game.
• Pride and Gossip - Solo TTRPG about running a regency-era gossip newsletter
• StoryGuider: A Small-Scale Dragon’s Journey is a TTRPG adventure suitable for small children (like, under 5 years old)

The nearly-half that have been in previous games - people who aren't obsessive collector of megabundles will not have all of them.

Lots of good stuff in here. (...which is how I became an obsessive collector of megabundles.)