Take-Two Interactive (NASDAQ: TTWO) has been on a roll in the last several years following extremely strong sales of Grand Theft Auto V. Even after a 300% gain over the last five years, the stock still trades for a reasonable forward price-to-earnings ratio of 24 times fiscal 2018 earnings estimates. Let's review the important drivers for the video game company in the year ahead and beyond.Take-Two generates the majority of its revenue from direct-to-consumer sales of in-game content, so a big game release like a Red Dead Redemption or Grand Theft Auto serves as a catalyst that sparks more sales of digitally delivered content, which ultimately helps grow the bottom line.Red Dead Redemption 2 is very important to Take-Two's bottom line in fiscal 2018.