[3] Gero Blaster was a game based on comics that Pixel drew in college, starring himself as a frog and his girlfriend as a cat.

[4] While Pixel developed Cave Story entirely on his own, he worked together with Kiyoko Kawanaka for Kero Blaster so that he could stay motivated.

In this demo, the player is an unnamed pink office worker who must find a missing document to avoid the anger of her boss.

[15] Before the full release, PCGamer called the free Pink Hour demo "too brief and too difficult to really get to grips with", though it praised the game's trailer.

[27] After the release of Kero Blaster, TouchArcade described Pink Hour as a "great way to check out what KeroBlaster is about – or just to get a new level of the game to play.

"[25] Eurogamer stated that Kero Blaster is not less engaging than Cave Story, despite its short length, and describes it as "a three-hour trip that demands to be finished.

[16] USgamer praised the implementation of the control scheme in the iOS-version, stating that Pixel solved common frustrations in mobile games "in an eminently sensible manner without compromising Kero Blaster's depth of gameplay.

"[1] Game Informer enjoyed Kero Blaster's toggled firing directions as well, compared to other "clumsy virtual gamepads".

"[31] Pocket Gamer called the game "fresher and more exciting than much of the content on the App Store" and Gamezebo stated that Kero Blaster's "compelling retro-style graphics, sharp controls, intense shooting action, and charming character designs make it one of the best action games on mobile.