Infinifactory is considered by Zachtronic's lead developer Zach Barth as a reworking of his first game,
Manufactoid, in three dimensions. Though Barth did not feel this game was very good, it would help set up the mechanics of other games he developed, including the popular
SpaceChem, which has the player developing manipulators to create chemical molecules. Barth wanted to develop a game that has the same flavor of mechanics of
SpaceChem without making a direct sequel, and turned back to the original idea of
Manufactoid to build on. Further, the game is based on the block mechanic approach that Barth had developed for his title
Infiniminer, itself a basis for many other block-building games like
Minecraft. The success of
Minecraft led Barth to realize that basing a puzzle game on the block construction mechanics would make the game's fundamentals easy to grasp. Barth was also given suggestions by fans of his titles to return to the puzzle game genre after the release of his
Ironclad Tactics. A significant difference in
Infinifactory compared other block-building games is the integration of supporting blocks to allow for blocks to fall when they are disconnected from other block structures. This was necessary to get the mechanics of the 3D conveyor belt system to work correctly and appropriately for their envisioned game. The game's music was composed by Matthew Burns, who aimed to produce tracks using relatively low beats-per-minute that would work well as ambient music without putting additional pressure on the player as they worked through the puzzles. The game was released to
Steam Early Access on January 19, 2015. During early access, players were presented with a brief survey after each puzzle, asking for their thoughts on the level of difficulty and enjoyment; these responses were used to tune the puzzles that would be included with the final release of the game. The early-access period was also used to determine how far to develop the story elements of the game once the game's main engine was complete.
Ironclad Tactics had a large amount of internal story, which took considerable time and effort to develop, and Barth found that players did not even respond to the story positively. As such, for
Infinifactory, Barth opted for a more minimal story to release with Steam Early Access and used feedback to determine if more story needed to be added to the title. The game left early access and was fully released on June 30, 2015, and a PlayStation 4 version was released on December 22, 2015. ==Reception==