Earn enough lifetime RP (think xp) across all activities to reach Global Tier 10 (think level 10). You mostly earn RP for your bets paying out. The RP gain is proportional to the size of your wager/payout. RP isn't gained when your winnings are offset by simultaneous losses (e.g. betting Red and Black on the same roulette spin doesn't earn RP if one hits). I don't feel comfortable recommending particular games/bets, as they are all designed to lose over time, and it's addictive, and they want your real-world money.
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To Reach----
Total 2------25 RP-----25 RP
3------50---------75
4-----100-------175
5-----150-------325
6-----225-------550
7-----325-------875
8-----450------1325
9-----600------1925
10----750------267511----950------3625
12---1150------4775
13---1400------6175
14---1600------7775
15---1900------9675
16---2150-----11825
17---2450-----14275
18---2750-----17025
19---3050-----20075
20---3400-----23475
21---3800-----27275
(please help me fill this out

)
31---9000
32---9500
33--10000
34--10500
35--11500
36--12000
37--12500
38--13500
39--14000
40--15000
(117,500 RP to go from Global Tier 30 to 40)