 Reviewers commented that the imaginative character designs and use of advanced graphics technology , such as hardware transform and lighting , and bump mapping , made the graphics of the game unrivaled in its time ; ActionTrip was so impressed by the game 's visuals that they thought their graphics card was supporting the complex hardware environmental bump mapping it was incapable of . The animation of Kabuto 's antics such as elbow dropping onto tiny enemies , and tossing up and catching food with his mouth , in particular , won the praises of reviewers . Many critics , however , were disappointed that the computer versions of the game could not run smoothly at full details on the recommended system specifications . 
