Noticed an oddly placed 1 in place of an I whilst ROMan was saying "It's what I'm made for". Considering his dialogue boxes usually swap I's with exclamation marks, it was a good bit of foreshadowing.
Also saw a couple 1's replacing L's during the "Game Jam" music video, alongisde one popping up in one of Neojock's dialogue boxes - nice touches all around, I feel.
Gotta say, that ending was pretty brutal - poor guy had his game ruined, and had his body stolen, by someone who he thought was dead.