Note: this is a modified version of a list by Kain Shin.
- 80/20 Rule: 80 percent of the game comes from 20 percent of the work. The remaining 80 percent of the work goes into polishing that last 20 percent of the game.
- 90/10 Rule: 90 percent of processor execution time is taken up by 10 percent of the code.
- Adhocracy: Organization in which tasks are done by the people who realize they need to be done and/or are able to do them best. (See also: Pirate Ship.)
- Aggro-nerd: Hyper-critical, combative, argumentative developer.
- Alien Queen: A nasty bug which spawns countless other bugs as defenses, making it extremely hard to find... and when you do finally find it, it suddenly becomes a real fight. (Named after the queen alien from the Alien series.)
- Alt-Tab: People with a reputation for not spending their time efficiently at work.