An "Online Rpg" not unlike the several other more popular games on the market today. Xenimus is alike to games such as everquest and dark age of camelot in that it is very addictive. (Addictive does not mean good) Differences include shoddy 1994 grade graphics, extremely harsh experience and gear loss, and full player versus player combat. (on normal servers)
Gameplay is repititious and lacking in any kind of appeal. You play xenimus because you have to, not because you want to.
Strong points: Fast, if not deep, pvp combat. Social engineering to steal gear from fellow players; ie: "Just let me borrow it" *yoink*
costs $5 a month, and you can mail the man (just one guy from wisconson runs this thing) cash, so its userbase consists of adolecents and children that do not have acess to credit cards.
To sum up: Your life is short and precious - don't waste a single second on Xenimus.
If everquest is crack, then Xenimus is paint thinner.