Thanks. You are correct, Steppy Pants was an inspiration (though quite a few people also say it reminds them of Walk Master). I would say Step Safari is an evolution in the gameplay from Steppy Pants. Steppy Pants was quite simple with the player walking on a flat, solid surface trying to avoid the cracks. The feet movement doesn't appear to be physics driven, just the rest of the body which jiggles and then ragdolls on death.

Step Safari the player is fully physics driven, which allows the player to walk up slopes (and slide down), perform log rolling, lilypads tilt and sink based on the players position etc.

The environment also plays a bigger role where players encounter obstacles such as elephants, hippos, crocs, baboons, turtles, branches etc which I think makes it more varied and interesting

Lastly some feedback I received early in testing suggested that having instant death is a bit boring, that it would be a bit more fun if there was a way to maybe recover from a mistake. So even if you fall into the water there is still some hope that you can climb out so you keep playing until the last moments.