The Alchemist and the Mysterious Dungeon (錬金術師と不思議なダンジョン)

Grow materials on your farm and explore six randomly generated elemental dungeons (30 floors each, a boss every 5 floors that unlocks shortcuts). Touching an enemy symbol starts a turn-based command battle; gold from monsters and from selling alchemized goods buys items, materials, farm plots, equipment slots, and upgrades for processed-material traits, synthesis size, material trait counts and rarity (right hand, left hand, head, body and up to four accessories). Alchemy now covers 141 reactions at science-track university entrance exam level: from 2H2 + O2 -> 2H2O to Ostwald-process nitric acid, aqua regia, the benzene ring from three acetylene molecules, and polymers such as nylon 66 and PET, built step by step. Each of the 24 elements can also be processed into a product such as steel or diamond, and weapons themselves can be used as materials. Dialogue choices with four heroines raise or lower affection; love level (max 100) lets you invite them to the party at 5 and learn a skill every 20. Character level cap is 100. Japanese-language game.