Yeah, in the game rules, if you ended positive on your trade, you bank the profits, but still have to try that phase again for a 100% gainer. But if you lose money on the trade, you have to go back to the previous "phase".
In theory...if you started with $1000 and managed to complete 10 phases (10 doubles) you'd have just over $1,000,000
I am not a promoter or professional stock trader. I'm a regular guy who enjoys stock trading to make (or lose) a few dollars. I am only responsible for my own trading foibles, not yours...do your own DD.