Snowball Zombies

From BoardGameGeek:

User summary Roll the snowball roll over the zombies! To the peaceful village shut in by the snow, the zombies suddenly come and approach! The villagers used the last hope "Snowball" to challenge the zombies ...! 雪玉ゾンビ (Yukidama Zombie) in English means 'Snowball zombies'. This is a strategic action game using tilted boards. As a villager, the player rolls snowballs (balls) from the top of the hill and repels the zombies that are approaching. As a player's action, you can roll snowballs or drive piles into the board. The player who beat the most zombies and became the hero of the village is the winner! Publisher's summary 雪玉ゾンビは、傾いたボードを使った戦略的アクションゲームです。 プレイヤーは村人として、丘の上から雪玉（ボール）を転がして迫りくるゾンビを撃退します。 プレイヤーのアクションとして、雪玉を転がしたり盤面に杭を打ったりすることができます。一番ゾンビを倒して村の英雄となったプレイヤーが勝者です！