The idea is to extend the already existing path activity. Here, the user does not have to walk on a pre-defined path and is free to roam around. Additionally, we have an energy property associated with Tux. The user has to spend 1 energy to move one step in any direction. Initially, Tux has a fixed energy value. This energy may or may not be sufficient to reach the destination. Tux has to collect food items along the way (say fishes), to replenish its energy to reach the destination.
Additionally, we can explore other types of obstacles used in the activity to make it more exciting. One such idea is that we have a river in the middle of the map, and the user has to cross the river using a bridge.
Adding animations to the activity would be a plus. For example, add animation to energy components on the map. This would allow the users to locate energy items quickly. Animations should be subtle and non-invasive. Also, hitting a solid block from where Tux cannot pass should trigger some audio/visual feedback. The possibility of adding animations to other components could be explored.
