My 6-year-old daughter loved this game. She's requested it 4 times since we first played it last night. The first words out of her mouth this morning were "Daddy, can we play the spaceship game again?"
Everything is so streamlined and easy to understand for kids. There is no text on the cards, just symbols. Everything is really clear (either get a coin, do a damage, heal some damage, or draw a card). Immediately my daughter understood the idea of buying cards from the same "team" so that they would work together. She plans ahead and buys cards that she needs to build up on her strategy. The art is cute and appealing. There is so much to love about this simple, relatively inexpensive game.
When I introduced this game, I explained that it is called a Deck building game because we build up our decks with more powerful cards, and I pointed out that there are lots of OTHER deck building games we can try later, ones with superheroes (Marvel Legendary), Star Wars (SW Deckbuilding Game), and Lord of the Rings (LOTR Deckbuilding Game). Halfway through our first game, my daughter said "I love this game. I think this might be my new favourite kind of game." I'm certainly looking forward to exploring more deck building games with her soon, but for now this is providing us with everything we need to consistently have a great time.