I tried the same experiment with DeepSeek 4 Flash as well, on more than 4 games. And I think you might be right, the performance is much worse for other games:
https://news.ycombinator.com/submitted?id=wohoef
Great post. I looked into the reasoning trace, and it seems DeepSeek 4.1 Flash 1017 does know all the games you listed in the post, so there is no knowledge gap. Not sure about Qwen though. I will not be surprised if it doesn't know all these games.
[–] liuliu 3 days ago