Hey,I've recently started programming my own text based game and was wondering why some sites sell upgrades in the form of donations and why others just say buy.Just to make sure its clear. Site A has a donation where you can donate say $5 and you get game specific items, where as similar site has the game specific items listed as you can buy them.Is this due to a legal issue or does it have to do with marketing?Any other information on any legal aspects of building and launching a text based game would be great. The last thing I want to do is launch a simple game and then end up with some legal issue.Thanks.