Q.U.B.E. (found betas of PC puzzle game; 2010-2011)
Q.U.B.E. is an independent first person puzzle game released for the PC on December 17th, 2011. and on other platforms 2015.
The game takes place in a sterile environment similar to that of Portal, with your character waking up equipped with high-tech gloves which are able to manipulate and extrude color-coded cubes in the environment.
Q.U.B.E. was developed by Toxic Games and originated as a student project. The developers had an IndieDB page to post news and beta versions of the game when they became available. Some footage of these betas have been released on YouTube at the time that they were available, but at some point after the game's official release, the developers removed the beta versions off their IndieDB page.
For some unknown reason, the files are not able to be downloaded via Internet Archive, and their can be more Beta versions of Q.U.B.E. that we're released on Toxic Games' IndieDB page that we're not preserved by the Internet Archive.
Gameplay of Q.U.B.E. v1.3: https://www.youtube.com/watch?v=p3ViIhaSr_o
Gameplay trailer of an early version of Q.U.B.E. that's more akin to the final game (it's unknown if this version recieved any beta release): https://www.youtube.com/watch?v=s21rMdmM0VA
Gameplay of an early demo version of Q.U.B.E.: https://www.youtube.com/watch?v=wG_05yXd5Fs
Trailer for the final game: https://www.youtube.com/watch?v=iABxhj0ExA0