Possibly the deadliest drinking game ever. It's Russian.
Duration: Long ~1hr
Things you'll need
1. Start with a cup of beer & a bottle of vodka 2. Take turns having a drink of beer then topping it back up with vodka 3. After a while, the beer cup will mostly be vodka (your judgment) 4. Now, start taking turns again drinking from the cup and topping it back up with beer 5. Once it's all beer again you've passed one round! ... how many rounds can you handle?