Hi Romek! Thanks a lot for the kind words :) I'm glad you like the collection.
If you buy the complete bundle, you can use the free packs content in commercial projects.
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Hahaha :) I'm very glad you found Minifantasy! The collection is definitely a great starting point for a new project, it will get you covered ;)
As for the upcoming packs in the collection, I release a new asset pack every month. The fun part is that Minifantasy is run by my Patreon community, supporters suggest and vote for the upcoming packs, so they are in total control of where the collection is going :D
For this month they voted "Minifantasy - Lost Jungle", an ancient jungle tileset with dinos and other cool stuff. It will be ready at the end of the month.