Mountain climbers ascend slopes; you build weak-point charges that trigger steered snowslides to bury them, plus warden huts with slow harpoons. Slides reshape the mountain. Signature: aim the slide so it follows the gully the horde just entered.
Alpine blues and whites, powder bursts, pine silhouettes, fixed rope lines, setting-alpenglow sun.
Click, Enter or Space to start. Place and upgrade towers with the mouse and number keys, or by tapping on touch, to stop each enemy wave before it reaches your goal. The HUD tracks lives, cash and wave.