10000000[1] ("Ten million") is a hybrid puzzle-role-playing game developed by Luca Redwood under the company name EightyEightGames, released initially for iOS in August 2012, and later for Windows and Mac via Steam in January 2013, and to Android and Linux systems in March 2013.

While in the dungeon, the character moves forward on their own, facing monsters and collecting treasure, but their progress is set by the player as they slide rows or columns of icons to match three similar ones, generating melee and magic attacks, loot, keys, and other resources.

[1][2] Upon starting a new game, the player is presented with the adventurer character and a door leading to a dungeon, along with several barricaded rooms.

Most benefits may only be realized at certain times – melee and magic attacks and defending only occur when the character is facing against an enemy, while keys only help while near a locked chest.

In the main starting room, the player can then spend resources to buy equipment that can be used while on the dungeon such as a spell to instantly kill the next enemy that is faced, or a key to immediately unlock a chest.

Alternatively, the boarded-up rooms can be unlocked with a specific number of resources as to gain access to equipment or character upgrades to purchase that alters the mechanics of the tile-matching game, such as by increasing the strength of attacks made when four or more tiles are matched, or improving the odds for certain tiles to appear on the game board.

[10][11] One of the earliest reviews was by Eli Hodapp of the site TouchArcade, who stated that behind the simple interface and puzzle-matching aspects is a "much, much deeper game", and considered the title "gloriously hectic".

[22] Macworld named the iOS version as one of its App Gem Awards for 2012, highlighting "the whole-hearted embrace of old-fashioned simplicity in design and execution".

Redwood believed the continued success of the game was due to his decision to bring the title to Windows and Android systems.