Strictly speaking I Spy would be on-topic as it hits the 4 qualifications that we use to define an on-topic game here:
Be playable on or around a table
Have objective rules of play and win conditions ...
The more work you've done on your strategy question, the better it's likely to be.
A weak question is, "What are the best strategies for game X?"
A stronger question is, how does strategy X prevent ...
Yes, regardless of the deck
As murgatroid says:
A rule about whether questions are on topic needs to depend on the topic itself, not on external information about the specific subject.
Let the votes ...