Tower of Saviors (神魔之塔) is a mobile game developed by Mad Head Limited, a Hong Kong-based mobile application developer. ToS is a combination of a match 3 game and an RPG, with characters from various mythologies and cultures.
In Tower of Saviors, players assume the role of Summoners and collect various monster cards with various mythological backgrounds and rarities as player moved on. Runestones are tiles that player have to align horizontally or vertically with the basic minimum of 3 Runestones in order to dissolve them. Aligning at least 3 Runestones of the same attribute will give Players' monsters power to attack corresponding with respective Runestones attributes. Runestones can be moved all over the board within a time limit per round. Once time is up, Attack power will be calculated according to the Runestones dissolved. Players can make a Combo by dissolving 2 or more Runestones combination. The more Combo Player made, the more powerful Attack are launch on enemies.