The edition which launched a storied tabletop game. The year was 1984, objectively the most perfect year to release a game about a futuristic totalitarian society. West End Games launches Paranoia and, for a few brief years, they capture lightning in a bottle. It is a convergence of perfect creative choices. Costikyan, Gelber, and Goldberg come together for fantastic design and implementation. The comedy of the setting and its trappings combines with Jim Holloway's art to create something which is greater than the sum of its parts.
The rules are okay. We're in the middle of a shift towards rules-lighter games and Paranoia stumbles a bit here. Mostly it's a D100 roll-under system but the way to calculate your target skill percentages is a bit byzantine. Your skills deteriorate as your clone number goes up which also accelerates the dying you'll be doing which sounds more frustrating than fun. There is something interesting in it, though: When you are attempting something not covered by a skill, you roll a number of D10s trying to get under a matched ability score. The harder the check, the more dice you roll. I've not seen a system like this and I think it's neat.
1st Edition gets the ball rolling though I think that 2nd Edition is a much better implementation and brings the game under a more complete design. The box art of 1st edition is just bad. It doesn't give a correct impression of the game at all, it looks far too serious. The interior art is perfect. 2nd Edition would lean more towards sillier covers that properly illustrate the game. But, everybody's gotta start somewhere.