Maybe initial bets 0.01, 0.02,0.04, 0.08 etc so people can try martingale ;-)
This is different in that you can win many multiples of your bet (not just 1x like black/red on roulette) if you get in late enough to get the whole pot. You can only martingale if nobody else is playing against you.
So it's not strictly martingale betting. But players could still keep 'moving up' to the next stake level until they win, making it very martingale-like. If you bet close to (but higher than) the highest existing bet each time then your winnings will be very close to, and possibly more than, the sum of your bets.