Eversim develops outlandishly complicated political simulators, such as "Geopolitical Simulator." They currently do not accept BTC, even though they are based in France, and I suspect have to pay quite a bit for Paypal conversion & transaction fees.
If anyone else would like to request the same, I contacted [email protected] -- but since I didn't get a reply, you may wish to write to a different email address. [email protected] might be a good one.
Cheers!