These are games that aren't part of the Princess Maker franchise, but are similar, related, or even directly inspired by the series.

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• Cute Knight - Developped by Hanako Games. In Cute Knight, you control an orphan girl named Michiko from her 18th birthday to her 21st. There's also a sequel, Cute Knight Kingdom
• Magical Diary - Another Hanako Games title, this one about a young student attending magical school. Has some RPG sections with spellcasting, but mostly stat-raising and romance. Also, you design your own character and can equip accessories.
• My Pet Protector - ???
• Spirited Heart - Developed by Winter Wolves. You control one of three girls (a Human, an Elf, or a Demon) for about ten years. No actual RPG elements, but more romance options.