It's possible that:
* The name is slightly different: Maybe it's spelled "Opti-le" or something similar.
* It's a local or niche game: It could be a game popular in a specific region or within a certain group of people.
* It's a made-up game: You might have dreamt up the name, or it could be a game that you've imagined.
To find instructions, you could try:
1. Searching online: Try searching for "Optile game rules" or "Optile game instructions" with different spellings and variations.
2. Asking in a relevant community: If you know where you learned about the game (e.g., a specific website, forum, or group), ask there if anyone knows how to play.
3. Providing more context: If you remember any details about the game, like the number of players, what pieces it uses, or what the goal of the game is, you might have better luck finding information.
Let me know if you have any other details about the game, and I'll try to help!