dupl.io

dupl.io is a multiplayer strategy game in which players must compete to against each other to take over a grid based map. The player starts with a single tile on the grid marked with 1 dot. Clicking on the tile adds a dot, and clicking on a tile with 4 dots causes the player to lose that tile but gain the four tiles around it. If the player already controls a adjacent tile, it will instead add a dot to it, and potentially cause a chain reaction if there are multiple tiles with 4 dots next to each other. If the adjacent tile is control by another player, it will add a dot and steal that tile from them. The players score is based on how many dots they have on the tiles they control. If a player reaches a score of 425, that player wins the game. Players can form alliances in the game, which prevents them from taking tiles from each other.