88 Heroes: 98 Heroes Edition is an enjoyable game with an interesting and unique premise, plus the multiple game modes do make for a lot of replayability.  However, some of the heroes basically do nothing but jump and some of the ones that can attack have attacks that can easily backfire if you don't know what you're doing, making a lot of the game trial and error.  Also if you get down to just one hero, get very used to him/her/it as you do have unlimited continues, but unless you get enough coins to revive someone, that's all you have for the rest of the game.