Web game offers 10,000 sats to player who destroys 10,000 BTC

Mempool Space Invaders is a browser game that maps real Bitcoin transactions to falling “whales.” Players steer a ship and shoot descending whales; destroying a whale adds that transaction’s BTC amount to the player’s cumulative total. Shields degrade when whales are missed. Players can restart for free or pay 1,000 sats (about $0.73) to continue a previous run.

The game’s pseudonymous creator, Jasonb, posted a bounty that will award 10,000 sats to the first verified player who reaches a total of 10,000 BTC inside the game. At recent prices, 10,000 BTC is roughly equivalent to $730 million. The reward is paid in sats, the smallest unit of Bitcoin: one satoshi equals 0.00000001 BTC.

Destroying 10,000 BTC in the game requires matching the value of actual on‑chain transactions that appear as whales during play. The creator outlined two paths to achieve that threshold: skilled play combined with the luck of large transactions appearing during a session, or deliberately broadcasting large transactions to the blockchain and then destroying them in the game. The developer suggested creating a single 10,000 BTC transaction to oneself or two 5,000 BTC transactions broadcast close together, and warned that high fees could reduce the net payout.

To claim the bounty, a player must submit a screenshot of the game’s “game over” screen showing the required total. The developer added that if someone fakes that screen, the sats are “deserved.” The creator also noted the prize deliberately is small compared with the scale of on‑chain value the game asks players to match.

Players attempting to build large totals have reported capturing only modest amounts in a session, often in the tens of BTC. The game follows a pattern seen in other free‑to‑play Bitcoin‑backed games, which typically offer small BTC payouts relative to the time and effort required.