Easy to play. All you need to play is the first ten pages of the book and a standard set of tabletop dice and as the game master, you never need to roll (unless you want to). R/K is fun, fast-paced, and you never need to hunt through the rulebook.

Quick to learn, fun to master. In R/K, you only have three stats. To act, roll a d20. If you roll under your stat number, you succeed. It can get a little more complicated than that but when in doubt, roll a d20.

No/low prep. Playtesters have said that you can prepare multiple sessions in 20 minutes or less and creating a fully playable character takes about five minutes. No complicated character sheets and barely any math.

Tell awesome stories. Players can use their time-travel powers to plant items they need in the environment during play. This makes for fast-paced and fun gameplay.

Cathartic. You get to assassinate some truly evil people. You will never experience a catharsis as sweet as blowing Ronald Reagan out of an airlock while playing a cybernetic punk from the 26th century.