sponsor's pay you, so if you're thinking of how to fund something like this you might want sponsors. things can get done for shoestring budgets but technology costs and knowing how to use it is an in demand and pricey skill. so for a shoestring budget you will end up with an outdated looking game, unless you or someone you know (who will work for next to nothing) can supply something that would otherwise take up a large portion of your budget (whether equipment, knowledge, extremely intense man-hours, creative up-to-date coding skills).