I have implemented a frequently requested option to have the initial bet (also known as antes) increase periodically, every X rounds in the Caveman and Cromagnon Hold'um games. By default, the initial bet will increase every 5 rounds. Additionally, I have changed the default initial bet to be 5 stones.
The changes are linear - for example, if the initial bet is 5 stones and increases occur every 5 rounds, the first round will be played with a 5-stone initial bet, the next five rounds will have a 10-stone initial bet, then 15, 20, 25, and so on.
Both changes apply only to newly created games, existing ones will continue as they were.
Enjoy!