Basically, post about a game that was made a decade or so ago and say how the way today's games are sold would have affected it. I'll start.
If Super Mario Bros. 3 were released today, the Tanooki Suit, Hammer Suit, P Wing and the second half of world 5 would be DLC. The two-player Mario Bros. minigame would be too; attempting to trigger it on the map without it unlocked would just trigger an error sound and a popup telling you to buy it. I'd imagine it would cost a pound/dollar/equivalent in points for the power-ups, a fiver for the second half of world 5 and a tenner for the Mario Bros. minigame. In addition, every time you used a new powerup, it would ask if you wanted to post it to Facebook.
FF7 would've come with the option to pay a small amount of real money to instantly have a gold chocobo once breeding became available.
That's the gist of it. Have fun and entertain one-another!