It's entirely possible to playDungeons & Dragons for free, but it's entirely too tempting to spend a lot on it. With a constant stream of expensive sourcebooks, interesting accessories, and every imaginable variety of dice, sticking to a budget means you'll have to ignore a lot of potential purchases. Investing in official books can often rack up the most significant expenditures, with most releases coming in the form of oversized hardback tomes that cost 50 or 60 dollars.