italics = done after all the optional quests are done
bold = last & final quest
- Where's Putty? (Cactus Diary 4)
- Diddle's Letter (Cactus Diary 6)
- Two Torches (Cactus Diary 7)
- In Search of Faeries (Cactus Diary 11)
- Teatime of Danger (Cactus Diary 12)
- Star-crossed Lovers (Cactus Diary 13)
- Mine Your Own Business (Cactus Diary 14)
- Pokiehl: Dream Teller (Cactus Diary 15)
- Diddle Kidnapped!? (Cactus Diary 16)
- Heaven's gate (Cactus Diary 17
- Diddle Had It! (Cactus Diary 28)
- The Looking-Glass Tower (Cactus Diary 21)
- Two Pearls (Cactus Diary 22)
- Cosmo (Cactus Diary 24)
- Can't Look Back (Cactus Diary 25)
- A Siren's Song (Cactus Diary 26)
- Summer Lovin' (Cactus Diary 27)
- Drowned Dreams (Cactus Diary 28)
- Fluorite (Cactus Diary 29)
- The Lucky Clover (Cactus Diary 31)
- Alexandrite (Cactus Diary 32)
- Teardrop Crystal (Cactus Diary 33)
- The Quiet Sea (Cactus Diary 34)
- The Treasure map (Cactus Diary 35)
- The Dragon Princess (Cactus Diary 37)
- The Guardian of Winds (Cactus Diary 38)
- The Ghost of Nemesis (Cactus Diary 39)
- The Crimson Dragon (Cactus Diary 40)
- The Fallen Emperor (Cactus Diary 41)
- The Blessed Elixir (Cactus Diary 42)
- Seeing Double (Cactus Diary 43)
- The Cage of Dreams (Cactus Diary 44)
- Niccolo's Business Unusual: Part 2 (Cactus Diary 45)
- Niccolo's Business Unusual: Part 3 (Cactus Diary 46)
- Niccolo's Business Unusual: Part 4 (Cactus Diary 47)
- Niccolo Calls It Quits? (Cactus Diary 48)
- Li'l Cactus (Cactus Diary 49)
- Rachel (Cactus Diary 50)
- The Nordic Snowfield (Cactus Diary 51)
- Buried Treasure (Cactus Diary 52)
- The Path of the Blacksmith (Cactus Diary 53)
- Enchanted Instruments 101 (Cactus Diary 54)
- Golem Go Make 'em (Cactus Diary 55)
- Gilbert: School Amour (Cactus Diary 58)
- Gilbert: Resume for Love (Cactus Diary 59)
- Professor Bomb's Lab (Cactus Diary 60)
- Watts Drops the Hammer (Cactus Diary 61)
- The Seven Wisdoms (Cactus Diary 62)
- The Field Trip (Cactus Diary 63)
- Catchin' Lilipeas (Cactus Diary 64)
- Gilbert: Love is Blind (Cactus Diary 65)
- The Wimpy Thugling (Cactus Diary 66)
- Pee-Wee Birdie (Cactus Diary 67)