Beyond the Sun: We mixed in all the cards with no bias, so the chance of the final point-scoring tech was NOT guaranteed. Made the game very interesting, and we competed for planets more fiercely.
Brew Crafters: I didn't know players could still brew beers when the tokens ran out, which made the race to brew specific beers more interesting! (Turns out you can, which lowers tension quite a bit.)
It's surprisingly popular in the American midwest. Every place (or person) has their own variation on it the ruleset, with the only persistent agreed-upon rule that you're not allowed to discuss the rules with anyone. That way, every game is deliberately confusing to veteran players and painfully hostile to new players.
A very fun game to watch, but stressful to play if you want to win.