If you're looking for anime similar to Hetalia: World Stars, you might like these titles.
America hosts a grand Halloween party, but the party features a costume contest!? England was the only one who didn't know about the contest, and the reason is....
The Pictorians have arrived from deep in space. They also have dangly glow-balls on their heads, which is kinda cool, but still. The freaky aliens are using use their crazy rainbow-beam-thingy to paint everything on Earth the same color: white! See, now the title of the movie makes more sense, right? Anyway, if the Pictorians are to be stopped, the Allied guys and the Axis boys - plus some new characters, too - must set aside their differences, unite against their common foe, and hopefully get together for a sweaty workout to make sure they're super-ready to save the world!
In the name of keeping global peace, politicians have come up with a new method of sorting out disputes: they meet in locations across the world and wager on a game of Mahjong. Koizumi is the former Prime Minister of Japan’s Cabinet who is not only a Mahjong master, but won't let anything stop him from attending a game – not even three bullets to the chest from hired hitmen! No matter what obstacles appear in his path, be they alien-controlled ministers, weapons of mass destruction hurtling towards Tokyo, or the resurrected form of Chairman Mao, Koizumi will play his best hand, down to the very last tile.