FortressCraft

Upon starting a new game, players spawn on a water-filled tower in a randomly generated world. From this point they may start exploring their world or assembling structures with the various block sets given to them. Conversely they may also choose to dig through the ground, hunting for Relics that give bonuses such as the ability to fly, to jump higher, to place TNT charges and blow up blocks, and more.

There are currently a total of 615 different cubic blocks in the game, each with their own pattern and design, along with 64 custom user-defined blocks. These cubic blocks in conjunction with the custom user-defined blocks can be used to build anything the player wants. The blocks vary from simple color and texture variants to being quite unique—the trampoline block, for example, is a unique block that propels players up in the air higher and higher with each jump.

FortressCraft was met with favorable sales. Within the first two days of the game's release it was downloaded 40,000 times and purchased around 35,000 times. In August 2011, FortressCraft became the highest-grossing Xbox Live Indie Game title, with over one million dollars in sales. FortressCraft retained this record until May 2012, when Total Miner was announced to have sold 800,000 copies. As of May 1, 2012, the game has sold 750,000 units.

Internet Personality Daniel Keem better known as Keemstar was heavily involved in promoting the game and even made a deal with the developers where he made millions from the game.