Super Smash Bros. players are reporting a glitch in the Nintendo 3DS version of the game that blows up characters into comically huge monsters.

Super Smash Bros. is currently available in Japan; players have demonstrated the glitch in several videos on YouTube and in photos posted on Twitter. Although Yoshi appears to be the most common character to grow to Godzilla-sized proportions, Twitter user ti_owo posted a photo of Pokémon Greninja, who appears to be just as large and in charge on the battlefield.

According to YouTube user pikatto64, who uses the bug to supersize Yoshi in the video above, the glitch can only be exploited in Multi-Man mode.

Super Smash Bros. for Nintendo 3DS launches in North America Oct. 3. The Wii U version is expected to launch this holiday. For more on the handheld game, check out our review.