Disney's latest animated feature Wreck-It Ralph is chock full of videogame references, some more obscure than others. For instance, the final boss of Altered Beast makes a brief cameo in his rhino form. That gives us the perfect excuse to look at an obscure Japanese port of the game in our latest installment of Co-Op International. This month we look at Altered Beast (called Juuoki in Japan) for the PC Engine, an 8-bit system known as the Turbografx-16 in the west.

Our previous Co-Op International looked at the Japanese versions of Double Dragon II. This month we follow up with River City Ransom. Think the GameBoy Advance version is the best? No way! Read on to discover the River City Ransom that never left Japan but does feature awesome co-op.

In honor of Double Dragon: Neon's recent release on XBLA and PSN, this month's Co-Op International looks at a couple of classic Double Dragon games that never made it out of Japan. Both are ports of Double Dragon II: The Revenge and share a few things in common, but otherwise they could hardly be more different.

Japanese shoot-em-up makers CAVE have recently expressed interest in leaving the console market for the mobile market's greener pastures. Yet it turns out they have another Xbox 360 release in store for us after all. Dodonpachi Saidaioujou (a title which is extremely unpleasant to type and has no direct English translation) , the latest in CAVE's long-running Dodonpachi series, will make the transition from arcades to 360 next year.

Another month, another co-op Japanese shoot-em-up goes under the magnifying glass. The first Radirgy game made it to the American Wii, but its sequel is import-only. Can indie developer MileStone compete with the likes of shmup gods CAVE? Read on to find out!

This month's co-op import is not a shmup, nor is it region-locked! Virtual-On Force belongs to SEGA's classic robot battling series. But is Transformers G1-awesome or Michael Bay Transformers-banal? Read on to find out!

This month's Co-Op International column takes aim at Espgaluda II Black Label. Not only is the title a mouthful, the game itself is full of bullets! Bullets and flying teenagers with psychic powers, oh yeah. Luckily for shoot-em-up fans, this one's not too tough to import.

Ragnarok Odyssey launched back in February for the PlayStation Vita in Japan.  The title is a Monster Hunter like game where players can team up and complete quests.  The problem is, it was released without any online co-op, instead players were limited to AD-HOC co-op only.  For Japan, this isn't a HUGE deal - but if and when the game is released in North America, online co-op is a must.

This month's Co-Op International column looks at Bullet Soul, a Japanese shoot-em-up from 5pb, makers of Phantom Breaker. Shmups can be hell, but this one is less so because killing enemies makes their bullets go away. Best of all, it's region free and easy to import.

Our first Co-op International Column focuses on Onechanbara Z: Kagura, a recently released Japanese Xbox 360 game. Kagura is as bizarre as past Onechanbara titles, but boasts much sharper graphics and combat. Get the full co-op scoop on Kagura before it reaches domestic shores (if ever)!