Welcome to Jungle Moose, a brand new game in which you should help the moose reach the end of the river.
How to do that? Swipe up the fish to kill them with the moose's antlers and watch as he advances forward. Be sure to decrease the number of fish in the sea and make the moose get to the objective as fast as possible.
The game is definitely engaging: once you start playing, you need to do it all over again to see if you've actually gotten better.
The game feels pretty short (I was expecting more levels) and will probably become repetitive.