It's definitely possible. The company that made runescape started out as a small company. Now the company isn't so small, and the founders are worth tens of mil

It's definitely possible. The company that made runescape started out as a small company. Now the company isn't so small, and the founders are worth tens of millions. If you are including text based games, there is a lot of competition, but you can be successful. I played Kingdom of Loathing for a few months, and it was a profitable mmorpg. That was even entirely free. Donations were accepted, and got you special items, but those items were traded on the in game market for in game currency.