The phrase "gateway drug" refers to a substance, usually a mild drug like cigarettes or alcohol, that is believed to lead people to try more dangerous or addictive drugs. Full definition
It's simple, it's tactile and it's addicting; this game is a great gateway drug for those unfamiliar with gaming. (gamingtrend.com)
Like I mentioned in a previous post, this is very exciting for me because it is a possible gateway drug bean to many others. (hungryhungryhippie.com)
This game goes on my shortlist of things I would give people who tell me they «don't really like videogames,» as a possible gateway drug. (gamegirladvance.com)