You can get free coins with random probability. It’s just free.

Probability Bitcoin reward
60.00% BTC 0.00000009
30.00% BTC 0.00000022
6.00% BTC 0.00000077
2.00% BTC 0.00000155
1.70% BTC 0.00000233
0.29% BTC 0.00009999
0.01% BTC 0.00059999
You can claim again in: