If the game crashes on startup, go to Config > Advanced and enable – some highly compressed builds require this.
Even in a compressed state, offers something no other MK game has: co-op racing. One player steers; the other throws items. The "Special Items" are wildly unbalanced and glorious—Bowser's giant fireball, Baby Mario's Chain Chomp, or the Koopa Troopa's triple red shells. Mario Kart Double Dash Highly Compressed