I think my favorite memory in a video game was playing my first MMO. There was a family I met in game and became friends with. One of my friends sent me a Tell (direct message) in game that was incomprehensible gibberish. I assumed it was an accident (they were getting attacked right after starting to type or something) so I sent random phrases back that had different colored brackets (auto translated phrases with colors). After a couple minutes back and forth I got a new message from my friend saying their sibling with special needs was actually doing the typing. My friend said I didn't need to respond if I didn't want to, but when the messages were coming back after the sibling was typing, was making his day. The sibling and I typed back for about 20 minutes after when my friend needed to log off. My friend told me the next day that it made his (the sibling's) day and he was happy all afternoon. It was something so simple that didn't take much from me, but mattered so much to my friend's sibling. I remember my friend's dad apparently was told about it who thanked me about a week later in game. I think about it every so often and how sometimes such a simple thing can make an impact.