I made my own webmail client in 2001. The killer feature was a Heart button that one-click opened a new mail addressed to my then-girlfriend-now-wife. I've never seen that feature replicated then or now. And since it was hard-coded to my girlfriend, it was clearly (hopefully!) not broadly applicable.
The different prompting strategies needed to improve results for different models is fascinating. I usually tell ChatGPT the role it should play to get better results e.g. "You are an expert in distributed systems". The same approach with Gemini returned "as a large language model constantly learning, I wouldn't call myself an expert."
Why hate on that game? It had both great puzzles (challenging yet approachable) AND was pushing the envelope of CD-ROM as a new technology, specifically the use of video + celebrities.