I am into board game and was into complex game because I thought they were more fun to play. Then playing a bunch of Spiel games, where the rulebook is 2 pages and the setup time is 5 minutes, I changed my mind entirely. I now refuse to buy complex games. I want little rules with a lot of depth.
There are many of them, every match is intense and yet you can explain the rules in a few minutes.
What does a Spiel game refer to?
If you want the ultimate depth:ruleset ratio, come learn Go :) Every game is so different and exciting