Destiny of Spirits impression

At the first glance, Destiny of Spirits is very similar to Square Enix's Kakusansei Million Arthur.

Similarities

• Free-to-play games on PS Vita.
• Mainly about collecting minions for PvE.
• Spend real money to guarantee rare minions (opening a booster). 
• Players must rest after a combat(s).
• Pay real money if you don't want to rest.

However, after actually playing it, I find that Destiny of Spirits is better overall.

DoS may have inferior character design and music, but its biggest issue is it has only touchscreen control (no button control at all). You'll probably hurt your arm playing it.

DoS isn't actually a card game because your minions, AKA "spirits," are not represented as cards. In short, this game is more like a free-to-play Megami Tensei or Persona.

Now let's get into what makes this game good.

1) As far as I know, you can enjoy DoS without spending real money to buy spirits. (I'm on my 3rd day and enjoy it without doing that.) I've been able to progress without hitting or seeing any "too difficult to challenge if not paying." It's not too hard to obtain in-game money (to buy a booster card) and good spirits.

From playing a couple days, I currently have 2 Super Rares (rarest), 14,000+ Summon Stones, 17,000+ Spirit Points. A booster card costs 300 Summon Stones.

2) You aren't forced to rest too long. Your spirits' HP (health) will remain just like that after a combat, and then they slowly heal themselves over time. The healing rate is reasonable. (You can pay real money to heal your spirits.)

3) The combat system is very fun and offers a lot of interactions. This's important. Unlike a bad card game where you have only one deck and face-roll, DoS requires you to constantly change your party members, because elemental advantage is crucial. The combat is in real time. You control 3 spirits at the same time and have to find a way to win as fast as possible so you don't take much damage. Because the more damage you take, the more time you rest. Later, you'll also have to tap the screen in the right timing/place as to allow a supportive attack from your friend. In short, it'll keep your finger busy each fight.

4) This game currently has only PvE. No PvP. The players who pay cannot interfere players who don't.