Hang Line is a game developed by Ed Kay which has recently released a trailer for both iOS and Android. The game is simple yet addictive as the goal is to reach as high on the mountain top as possible avoiding avalanches, goats and even crates of explosives. Your only means to achieve that is with a single grapple to grapple and hook your way up to the mountain avoiding obstacles.
Check out their trailer:
The grappling hook that you have can be constantly shot out however some obstacles as you can see in the trailer can fall. This requires some fast action and decision making by players to hook onto the next safe spot to bring yourself up to safety. In some of the terrain, it may even require players to clear an obstacle using the crate of explosives.
While the game looks fun and all from the trailer that was released, no specific date was announced yet. However we do know that it is coming soon for the iOS first, then the Android release later.