For the 3 of you that played Cave Story on a DSi you may remember that the sanctuary time attack was different and quite superior to the version available on Cave Story on 3DS or Cave Story+ on steam. So I went ahead and ported the maps of the DSi sanctuary time attack to the 3DS version of the game. Differences: 3DS: Lack of snake, machine gun, super missiles and pot of life. Black background and missing missile expansion/missile launcher before miniboss (big press). DSi: Snake, machine gun, super missiles and pot of life available. Hell background and missile expansion/missile launcher before miniboss (big press) restored. How to use: You just need a decrypted cia of Cave Story (you can use godmode9 or decrypt9 to decrypt it). I created this patch using the USA version, it should be compatible with the EUR version too but I haven't tested. Download Tools used: 3dstool, ctrtool and makerom.