Games
I have had the opportunity to play the game with the Playstation and also the online Adult Swim game. Here is how I rate it, but don't take my word for it! (Note: Due to certain reasons, the PS1 review has been removed for revision.)
Adult Swim

If you've played the Playstation game, imagine little mini-versions of those characters running around? That's what this game is. The backgrounds are no where as near as detailed, but they aren't bad. There is a helpful tutorial to teach you how to play their version of the game so I won't explain too in depth on how to play. You have starting cards that serve as attacks. Each card has a name and a picture. All of the names of the attacks are the English names. In order to attack in each round you must select a card and whereever there is a red square shows where it will affect the opponent. The top number is how much damage it will do and the bottom number is how much energy it requires. If you run out of energy, you won't be able to attack and only move around and do nothing...lots of fun there. I have yet for that to happen to me. Also, as you gain a new shard you gain a new attack that you pick at random from 5 cards. There are no second chances! You are suck with the card you get.
In your selection you get to pick 3 cards. As does your opponent. With each "round", the cards that you selected are played in order. The only glitch in this is say you put down an attack that defeats your opponent and puts them at 0 health, you still have to suffer through their attack which has the possibility of putting you down.
The attacks look mostly the same as the PS game, but the graphics are obviously different. The game can take forever to get through and I usually lose interest after playing it the first time. It's not that bad, but it needs work.
The characters available for you to fight as or against are split into basically 2 groups. The "Good" Guys & The "Bad" Guys. The "Good" Guys have Miroku, Kagome, and Inu-Yasha while The "Bad" Guys have Kagura, Sesshoumaru, and Naraku. Two other characters make guest appearances. Shippou makes his appearances when selecting cards and Kikyou offers attacks for you such as "Kikyou's Barrage". As you battle your way through you "unlock" fights which means if you wanted to, in that same browser you could go back and duke it out with a character again. Once you have fought the other 5 characters, you earn the whole jewel and win the game.
It has it's glitches and it isn't the best, but it's something! It can be fun the first time around, but after a while it gets boring and it loses your interest, or so it did with me. This isn't recommended for people with slow modems as it will drag and hardly move. It's not that bad, but I'll take the PS game over this any day.