[TOMT] [Game] Old kids PC game

I vaguely remember playing a puzzle game over and over when I was younger, would like to know if anyone can remember what it is. It was probably released around the late 90s/early 2000s - or at least, that's roughly when I was playing it. Probably for windows 95 or 98.

It was in a Castle, I think. And there was this (green?) dragon throughout a lot of it.

I also think it was made up of lots of different mini-games and puzzles. One puzzle/mini-game was a platformer-type.

Another was a puzzle where you had to get the dragon(?) across a lake of lava/magic-stuff by clicking the stepping stones in the right order. Edit: The stepping stones changed colour.

Any help would be appreciated, it's driving me crazy not being able to remember.

I'll edit as if I remember anything else.

EDIT: I've attempted to draw what I remember looks like - it's a pretty crude MSPaint attempt, so it's not the best. The left hand side is more likely to be correct than the right