The game takes place on a single screen, divided into multiple columns. At the bottom of each column is a letter or punctuation symbol and various enemies appear randomly at the top of the columns. Players must press the corresponding letter in a column in order to make the letter fire at the advancing enemies. If an enemy reaches the bottom of the screen they will remove part of the shield around the letter, and if it is eaten away completely the player will lose a life. Depending on the level, the letters assigned to each column will change at irregular intervals.
A version was planned for the unreleased Atari CX-3000 Graduate, an add-on to turn the Atari 2600 into a home computer.5 Atarisoft advertised a VIC-20 version in 1984.6
InfoWorld's Essential Guide to Atari Computers recommended the game among educational software for the Atari 8-bit.7
Hague, James. "The Giant List of Classic Game Programmers". https://dadgum.com/giantlist/ ↩
"Inside Atari: Star Award Winner", Antic, April 1983 http://www.atarimagazines.com/v2n1/insideatari.html ↩
"Wyzle!". Atari Mania. http://www.atarimania.com/game-atari-400-800-xl-xe-wyzle_5872.html ↩
"Impact". Atari Mania. http://www.atarimania.com/game-atari-400-800-xl-xe-impact_2558.html ↩
"The Atari CX-3000 "Graduate" Computer". Archived from the original on August 17, 2018. Retrieved February 18, 2023. https://web.archive.org/web/20180817062435/http://www.atarimuseum.com/videogames/consoles/2600/a3000.html ↩
"ATARISOFT. All the hits your computer is missing". BYTE. September 1984. p. 25. https://archive.org/details/BYTE_Vol_09-10_1984-09_Computer_Graphics/page/n26/mode/1up?view=theater ↩
Mace, Scott (1984). InfoWorld's Essential Guide to Atari Computers. Harper & Row. pp. 46–53. ISBN 978-0-06-669006-3.{{cite book}}: CS1 maint: date and year (link) 978-0-06-669006-3 ↩