I play most of the tower defenses, but I mostly play a custom RPG called Gaias Retaliation. Its really quite amazing what some of these map creators are able to make in such a confined space. Map size limits at 8 MB, and this RPG easily features ~200 hours worth of content to do. Granted most of the time is spent defeating bosses to fully gear all of the character options, but its still quite fun.
I just realized that when making wyvern bonemeal you spawn a pot. Therefore, since I will be making ~50 of these a day, after 365 days there will be 18250 more pots in the game!! Panic sell empty pots!!
JK, I'm too lazy to make 50 super prayers a day ... I wish though.