That’s where Dino-Riki’s unabiding cruelty comes into frame. Monsters and projectiles and instantly lethal hazards swarm Riki at every turn, and his limited methods of counterattack involve jumping, tossing things, and yelping comically when he’s struck. The game has only three actual stage themes, but they repeat several times before reaching a final, buglike boss. Then it all starts over again from the first stage.
Adventures of Dino-Riki has no ending. It doesn’t even grant the player, who’s surely spent hours upon hours memorizing the behavior of caroming pterodactyls and sinking lily pads, some concluding graphic of Dino-Riki triumphant. The North America version of Karnov and its “Congratulations” screen often go down as the biggest disgrace in NES endings, but at least Karnov cared enough to acknowledge you.
Hudson crafted Adventures of Dino-Riki in 1987, when the NES had plenty of arcade-like offerings that didn’t need endings. Yet Dino-Riki has just enough cartoonish aplomb to invite denouement, even if it were just some seven-second finale with Riki and the cover illustration's apparently nameless red-haired cavewoman (or the Japanese wrestler who occasionally takes Riki's place). This was an oversight in 1987, but it became out-and-out fraud when Dino-Riki came to North America in 1989. By then, even simple shooters like Thundercade and Captain Skyhawk rewarded you.