The Dice training series is a trilogy of games by Alicesoft. The games share similar mechanics where the female protagonists have to fight an evil organisation, but the only way for them to do so is to have their power boosted by H-ing the male protagonist. The H events as well as a few others will succeed or fail depending on the Dice rolls the player has.

Beat Blades Haruka is notable for being the first Alice Soft game officially translated and sold outside of Japan via MangaGamer.

Beat Series

 Beat Angel Escalayer 
Escalayer - package.jpg
 Beat Blades Haruka 
Beat Blades Haruka - package.jpg
 Beat Valkyrie Ixseal