Frankly, it has completely changed my life. I first experienced Game about four years ago (aged 16) via that old "Ladder Theory" site. I think I may have ended up here and on the DJ bible at some point as well. At the time I was a shut-in, socially retarded and had never had a girlfriend. I was actually linked to laddertheory.com from 4chan's /v/ (video games) board, as it happens. In just a couple of weeks I made a tremendous change. I couldn't believe it myself: people thought I was funny, charming, a shy girl I tried to help out said "Yeah, but you're naturally confident" and I burst out laughing, a female friend told me I had a "purposeful, confident" walk and a charming smile. But I failed to keep the redpill down: I was still beta at heart, and while I was able to attract some hot girls (including the hottest girl in my year group, a sweet little Portuguese beauty who is probably responsible for my surviving lust for foreign girls) I failed to make a move, although I did get some make-outs with hotties.
It wasn't until I was 18 that I lost my virginity, to a Serbian 5/10 (quite pretty but flat-chested and awkward). It only lasted two months, though. In the next months I laid a 4/10 English girl and a married 2/10, also English. The 4 caught feelings for me and I -- mostly accidentally -- used hardcore push/pull tactics on here to secure her as my FWB. But eventually, I slipped and went exclusive with her, purely due to my jealousy. This brings us to this January past after I broke up with her, then regretted it hard and went beta. Surprisingly, 4chan actually helped me out again; someone posted a link to Rollo's blog and that was how I got back into the Game. Since then, I've slept with a Greek 7/10, an English 6/10 (my ex's best friend, and my best friend's current girlfriend), an English 5/10 and a French 7/10. I recently went on a date with an 8 (notice how the rating is creeping up over time, as is the frequency -- Game fúcking works!) from Holland although it screwed that one up. And that brings us to the current day.
So my experience has been a huge improvement, but it hasn't been steady progress at all. There have been times where I leapt forward, and times where I fell hard.