Is there an option to queue for multiple games at once?

Yes, I know exactly what you mean. You are trying to get the most gaming done in the least possible time. Many online casinos support multi-table action through separate browser windows, so you can be playing poker in one window, and gambling on the slots in another.

And indeed, some sites now offer “multi-tasker’s” versions of their gaming screens. I know of at least several that display the game area in a pop-up window which you can shrink or enlarge to meet your needs. This option is still on the cutting edge, but it exists.

As for tournaments, remember that sometimes you'll need to focus all of your energy on them (e. g. Final Tables in Poker). If just want casual fun and variety tabs are the best bet. I always recommend my players using different browsers for different games - so much easier to track your playing than with one browser open! I encourage you to try both systems and go with whatever works best.

Many online casinos will allow you to play several games simultaneously (e. g., poker and slots at the same time). Tournament poker, however, typically requires your undivided attention. When playing live games, most sites will prohibit simultaneous play, but slots (or even many other single-player games) often can be layered. You’ll want to check each site’s terms of service, though, as some do restrict this. It’s very much case by case. I suggest checking a few online casinos to figure out what you prefer.