The game looks pretty good, I had heard that Disney asked the developers to make the game difficult, so they wouldn't rent it in stores.
If it was difficult, they would have to buy it and not rent it, if they wanted to finish it.
It is something that I have not found much sense in as a commercial policy.
I'm not sure that would have worked out for them anyway. Nobody would really know how difficult it was until they tried it. The internet wasn't really there yet to tell everybody. There were magazines but not everybody read those and typically reviews came along after the game was on shelves.
In any case, it was a good game and I'm sure it sold well. In fact, there was even a Genesis bundle that included The Lion King as a pack-in.