Summary: Here's the flaws I found right off the bat: You start with too many items, the abilities screen isn't easy to understand at first, and you can't equipt partners or upgrade their abilities. Also, the normal enemies and boss fights are a little wobbly. Sometimes the enemies are difficult, but the boss is a breeze, and vice versa.
Summary: I have found that DS games created by the publisher "Atlus" are sub par at best. They have a lot of weak games under their belt, but finally got it right with Summon Night Twin Age. Basically, you play as one primary character with secondary and tertiary characters following you around. The secondary character is fully customizable, and the tertiary character acts on their own.
Summary: I just can't deny Summon Night: Twin Age's charm. The game is easy to grasp and, although, it might not be the most innovative storyline, there's no denying it's fun filled. Summon Night: Twin Age features two main characters Reiha and Aldo, who you choose to play is entirely up to you. Reiha is a summoner and Aldo is a summon beast. The two came into each other's lives years ago after an unfortunate accident happened during a summoning experiment.
Summary: I loved this game. It may not reach the heights of Summon Night Swordcraft Story 2 on GBA, but it is still really fun. The stylus control works amazingly well. The story is delightful. The weapons crafting and skill trees add depth. Combat has been changed to overhead Diablo-style battles, a lot like Children of Mana. The only thing I found a bit annoying was the fact that many of the dungeons and dead ends.