Psycho Fox is a 1989 platform game developed by Vic Tokai and published by Sega for the Master System.

Kung Fu Kid was published in Brazil years after the initial release by Tec Toy as Sapo Xulé: Os Invasores do Brejo; as in Kung Fu Kid and Astro Warrior, the main character is replaced by cartoon frog Sapo Xulé.

The hippopotamus is slow and cannot jump very high, but can punch through special destructible blocks in the game world.

It was positively reviewed by Mean Machines magazine mainly for its addictiveness and good quality graphics.

[9] AllGame gave a rating of 3.5 out of 5 stars, noting the game being fairly lengthy and the players have the choice between two routes in each level and giving criticism to the basic action being repetitious, the controls being a little frustrating and the level design not particularly innovative concluding "Overall, this is a fun, if largely unoriginal game.