it's a flash game if any of u have ever played Swords and sandals i think ull like this
it's what the name says it's a Coliseum u fight other gladiators u can even battle ur friends by inviting them via facebook
http://www.berzerk-land.com/index.php?cmd=game&gameid=604^
link to the main site u can play it on many other sites make sure u make a gamersafe account when u play so it will save ur data