[2] Following Robot Unicorn Attack, Adult Swim released three follow-ups, titled Heavy Metal, Christmas Edition, and Evolution.

As part of the Robot Unicorn Attack series, a sequel was developed and released by PikPok for iOS and Android on April 25, 2013, and July 12, 2013, respectively.

The player controls a robotic unicorn and aims to prolong gameplay without falling off the stage, crashing into the edges of platforms, or colliding into crystal stars without dashing into them.

[citation needed] The game features the song "Battlefield" from German power metal band Blind Guardian.

[citation needed] In January 2011, Robot Unicorn Attack: Heavy Metal was made available on Facebook alongside its original counterpart as a single application.

[citation needed] A sequel titled Robot Unicorn Attack 2 was developed by PikPok and released on iOS on April 25, 2013, and Android on July 12, 2013.

[10] This game, just like Robot Unicorn Attack 2 features in-game purchases; the player can buy different amounts of Soul Crystals and a Rainbow Pack.

"[15] In reviews of the major flash games of 2010, Eurogamer writer Kieron Gillen said, "Like a comet made of gold, glitter and Lady Gaga's eyelashes, Robot Unicorn Attack circled the Earth and filled the firmament with its irresistible radiance for the whole of 2010.

"[9] Scott Sharkey of UGO Networks said that while "the aesthetic is a good gag for a few minutes", the important point of Robot Unicorn Attack is that "the game itself is addictive enough to last much, much longer.

"[16] Neon Kelly, Previews Editor of VideoGamer.com, concluded after playing that "Somehow the whole thing ends up being extremely addictive - despite the fact that the game's tongue is so firmly wedged in its cheek that it's in danger of giving itself permanent facial damage.

"[17] Toby Green of The Independent wrote in a short review that the game was "Great fun", giving it four out of five stars.

[18] In a review of the iPhone version of the game, CNN writer Topher Kohan concluded, "Easy-to-use controls, great soundtrack, the ability to turn the sound off and get useful feedback via vibrate and fun in-game tidbits.