Lol I always forget this official chat exists but it was a good timing to re-find it because you're talking about ninrendo ds games
Nintendo ds is a big part of my childhood (I played mostly Super mario games, nintendogs and of course Winx games!) My first Winx ds game was Mission Enchantix and it's still my favorite nintendo game ever!!

I love how it has everything I need: you can live the 3rd season story and have adventures and fights, you need to find the stars and be a little strategic when opening all the locks and doors etc, you have many minigames, dress up game and you can even collect pictures, videos and music from the game. I loved collecting Winx stickers as a kid (and still love) so I'm so much into collecting pictures also in the games

And it was so cool to visit different places from season 3 during the main game
The 2nd Winx ds game I got as a kid was the Believix game but it was hard because I didn't understand what to do in some minigames and lost the battles and got stuck. It didn't have so many versatile features than Mission Enchantix. I didn't buy the other Winx games as a kid because I liked "action" games the most and the newer Winx games didn't look so interesting (Rockstarts) and the party game. But as an adult I have collected all of them and I finished my collection last year. I've been thinking about re-playing every game and writing some reviews about them but I guess I need to wait for the next summer vacation to have time for it
I also have Winx PC game but I haven't tried it yet (even though I bought it a couple of years ago, but you know how's adult life like...

)