Amanda's former GameKid handheld pretty much only had a pet store game and some puzzle games, and the orphanage's video games were all PG games. Car smashing is new delicious territory.
When noodling over this scene I had the idea in my head to have Anthony discuss some sort of color-based communication system they had worked out with Felix. Something like directing him to do different tricks with different colors of light, maybe even communicate Felix's emotive states. Ultimately I axed it because I didn't want to sidetrack things too much, plus I think it felt a bit too far towards fantasy-fiction.
I feel like I probably made a mistake not putting the urn in the background of past strips, but at the time I didn't really consider the foreshadowing possibility.