Some of my game designs


My name is David O'Toole. I am an independent game developer based in the USA. I work primarily in the Common Lisp programming language. Since 2008 I have worked on several projects for the PC platform. All my games are available for free and are compatible with Microsoft Windows, Mac OSX, and GNU/Linux.

The avatar above is my mascot, Biclops. I can be contacted by emailing You can also follow me on Twitter: David O'Toole on Twitter

Now, a few games!

inv8r (2016)


My newest, an old-fashioned robot shooting game. See the inv8r page for info and downloads.

2x0ng (2013)


My generally well-received puzzle game from 2013. You can visit the 2x0ng page for more information.

3x0ng (2014)


High speed 60 frames per second multiplayer action. The sequel to 2x0ng. More info on the 3x0ng page.

2fr0g (2015)


Four player frog mayhem inspired by various 8-bit frog games. More info on the 2fr0g page.

1x0ng (2015)


Work-in-progress. A remake and re-envisioning of the original Xong. Learn about the game and download for free on the 1x0ng page.

The Testament of the White Cypress (2014)



Hand-painted HD adventure storybook game. Visit the cypress page.

Skyw0r (2015)

skyw0r-1.png skyw0r-2.png

Pronounced "Sky War", a hybrid 2.5D retro space combat and exploration game. Work in progress. See the Skyw0r page.

4x0ng (2015)


An experimental game which takes place inside an abstract particle reactor. You can check it out here: 4x0ng on GameJolt.

Author: David O'Toole

Created: 2016-08-24 Wed 12:23