The first video shows off the familiar Press Turn Battle system, which rewards you with extra turns for hitting the enemy’s weak spot. The second video demonstrates the Grin system, which gives stat bonuses to characters with an extra turn and removes their weak point. The third video shows off one of the boss battles of the game, The Demon Blocking the Way.
All three clips were combined into one video by Gematsu, which you can watch below.
Shin Megami Tensei IV will be released for Nintendo 3DS on May 23rd in Japan and is scheduled for a North American release sometime in the summer.