It was a fun 3D sidescrolling beatem-up when I was younger. I loved the lobbies and community PVP. It was also broken so there was many exploits and hacks.
PVE was alright. Some enemies were annoying and the map design was good depending on the level and difficulty.
PVP was a blast but broken. Players just spammed skills a bunch til the opponent was dead. Coin bought items gave an advantage in transformations like Khan Z, Lantern Man, Dragon and Knight.
Tower defense was meh and the levels were too bad to fun.
Overall a fun F2P game. I hope they make a remake or successor someday.