This research looked at the gambling behaviours using behavioural tracking data in decentralized gambling applications. Decentralized gambling applications use cryptocurrency to place bets rather than real money. The researchers examined 1,743,478 transactions from 10,357 players. The data were obtained from three decentralized gambling applications. The typical player only plays one day, spending $110 across six bets. The average loss for each player is 5.3% of their total wagers. Heavily involved players typically spend about $100,000 across 644 bets and play on average of 35 days. However, the typical player appears to lose a higher percentage of their wagers compared to heavily involved players. This research is the first to examine this new form of online gambling. The findings can be used to inform future research.