Thanks to all of you for the constructive suggestion. I have re-coded and re-launched the game. Hope, you'll like it this time. Fee free to report, if you find any bug.
So, what's new in current running version ? have you changed the whole rule of the game and also the max return of investment ?
Rules are now simple and straight forward. It is now working as a legacy Ponzi, i.e. loss is distributed among multiple investors unlike the single person loss in the previous version. People may invest whatever they want, i.e. system wont force anything onto them. There is no max return cap though.
Nice game. Will definitely give it a try. You might consider to create a signature campaign sort of a thing. Unique ponzi games are getting overshadowed by lots of crap around.