Fans recreated a playable version of what was supposed to be the last scene of Digital Estate Planning that Chevy Chase refused to shoot.
Dan Harmon explained to reddit:
“He refused to do the “tag” for the Digital Estate Planning episode (the 8 bit video game episode). In the scripted tag, Abed comes to Pierce with the thumb drive he took, and says “Pierce, I’ve been able to adjust some of the code for your Dad’s video game and I’ve made a version I think you might like better.” He puts the thumb drive into a laptop in front of Pierce. We cut to the laptop screen, where we see Pierce’s avatar on a front lawn with the giant floating head of Cornelius. Every time Pierce presses the space bar, his avatar throws a baseball to his father’s head, which gives him a thousand points and a “great job, son!” Pierce presses the space bar a few times, pauses, then leans over and embraces Abed and we fade to black. When Adam Countee pitched that tag, tears instantly rolled down my cheeks, and in point of fact, my eyes are getting watery describing it to you. It was the most important part of the episode and possibly one of the most important moments of the season. I was very upset to hear that it wasn’t shot because someone didn’t feel like shooting it, especially since it was literally the last day of shooting, which meant we’d never be able to pick it up. I regret nothing about how upset I got. My job was to care about my show.”
Don’t know who made the game other than Derferman on Reddit. These are his instructions:
Shift- pick up ball / throw ball