Prominent features of SuperTuxKart 0.9.1 include the addition of a new Candela City track, Antediluvian Abyss update, improved underwater landscape, and the ability to spot underwater ruins and fishes swimming in the gift package for donors. Furthermore, the Carnaval del cacao track that was previous included in the gift package for donors has now been made available to all users, the Oliver’s Math Class track received a lot of improvements, and other tracks were updated to be compatible with the new engine used in the game.