Can anyone recommend a game wiki that covers all major casino games?

To be honest, I haven’t seen any wiki that does cover all the main casino games. You mostly see separate wikis for poker and slots, but even those tend to be limited. When I created mine, I found that the most efficient way was to simply link back to the best resources out there, which are Wizard of Odds for strategy, Gambling.com for the rules and descriptions, and Slots.org for the slot information. All are rich with the required information about odds, rules, and how to play. Of course, if you’re creating a site with the goal of having a complete reference for each game (like in my wiki), you’ll want to link to these great resources for all the different game categories as well. That way you are giving your readers the best information. Just keep the menus intuitive enough, so that they don’t get lost when they go from one game, say blackjack, to another, such as roulette.

This is my view: