I have played Tibia for the last 3 and 1/2 years finaly quit recently for LOTRO.
Tibia is a very unique game mainly in the fact that it is 2d not 3d. This of course is not necesarly bad, for many people this makes the game unplayable as they refuse to play a 2D game. Being 2D though allows tibia to have many of the features it has though, Tibia's house feature is rather unique and as far as I can tell not doable on a 3D game like WoW without YEARS of perfecting it. More over the monsters are smarter in Tibia than in any other MMO I have played.
The community in Tibia ranges form awesome to immature and untolerable. Usualy Swedish, German, UK, Australian, USA, Dutch, and etc players are rather mature and help for a great community but Polish/Brazilian players help to make the community intolerable at most times.
Vocations "classes": (6.5/10)
The classes in Tibia arn't very well balanced, and well there's not much to choose from. Sorcerers are horribly over powered, druids are just weaker sorcerers, knights are horribly under powered and rather dull, and paladins are in the middle but a lot of work.
Knights: The "tanks" aka blockers of Tibia. All they are really there for is blocking; in PvP they get owned and compare a sorcerers leveling rate to a knights.
Mage (sorc/druid): Mages in general are over powered can level quickly and are awesome at PvP. Sorcerers are the best of the best being able to use "Ultimate explosion" aka UE. Druids are nothing but a bit under powered sorcerers that can heal.
Paladin:The paladin's aka pallys are right in the middle between a mage and a knight, being able to "SD" at higher levels and use bolts to hit monsters from a distance. They are very exspensive though and require a lot of training.
Tibia has no real crafting at all. Closes it has is rune making.
Tibia has a rather unique skill system and I like the way it's set up but it takes far to much training (literally like 15 hours+ at later levels) to go up one skill.
There's no sound at all but I love that fact, I always disable 3D mmo's sounds they annoy me and I prefer to just play my own music from ITunes in the backround.
Yes their 2D but they're unique and I like that.
High levels are ALWAYS getting hacked on a daily if not hourly basis. Also Tibia is filled with cheaters/botters.
Over all fun: (8.5/10)
This game has it's +/- like any game but over all it is rather fun especialy at the higher levels and can hold ones interest for many years.