This is a complete list of Drillimation content that was canceled or unreleased due to concerns or conflicts with other content, or may be a decision by the company.
- Starting from the Driller Engine 3 Era, Drillimation was going to have a feature on the PC versions of Touhou games where players can let other players watch them play and even comment on their gameplay. The concept had to be scrapped, as it would be too expensive to develop that into Drillimation games and most likely privacy concerns by parents.
Dinosaur Rollercoaster was a planned arcade platformer being developed by the same team who worked on Super Smash Keyboards as they were taking a break from darker concepts. The game was originally going to be lighthearted and family-friendly. Technical difficulties caused the game to be canceled, and from a request from British game developer Rareware, the game was reworked as a serious but humorous game called To Heart.
Guitar Hero: Drillimation SynthEdit
Guitar Hero: Drillimation Synth was a planned Guitar Hero spin-off created as a partnership between Drillimation and Activision. The game would feature various heavy metal remixes of songs in The Drillimation Series, as well as original compositions sung by actors who voice characters in the anime and games. The game had to be canceled due to arguments over the choice of engine, as Drillimation wanted to use Driller Engine, while Activision wanted to use Unreal Engine. Another reason for the game's cancellation was due to difficulties with localization.
Drillimation was one of the various media companies who submitted bids to purchase the rights to adapt the popular yonkoma K-On! into video game form, along with Sega, Taito, and Konami. Initially, the ideas were going to be a rhythm game using the Konami Bemani engine on other Drillimation games such as Taiko Drum Master, as well as video game adaptations of the anime. However, there were disagreements over what Kakifly wanted the game to be, as Drillimation wanted to make a danmaku shooter series like Touhou Project, Lucky Star, and The Adventures of Haruhi Suzumiya. The rights to the franchise were eventually bought by Sega.