All I can remember of the game is that:
- It was a platformer game
- The game might have been made in the 90's
- I think it was a DOS game
- It was a very colored game
- The main character was human (I think it was a female character)
I think I had to collect letters or some item to transform into animals and progress in the game -> A fish to explore the water, a bird to fly, etc.
I barely remember the word JILJ but I'm not able to find anything about this in a web search engine.