Sonic Cafe and Mobile phone games

Discussion in 'General Sonic Discussion' started by SojoboUchiwa, Jun 2, 2019.

  1. SojoboUchiwa

    SojoboUchiwa

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    Hello everybody,

    Thanks to this community I've discovered about the Sonic Cafe service and about games such as Nakayoshi Chao! or Shadow Shoot. Is it possible to play them on a PC or smartphone nowadays?

    Also, I still have my old phone with Sonic Unleashed mobile on it, but same question applies, is it possible to play it on other devices?

    Thank you,
    SojoboUchiwa
     
  2. ICEknight

    ICEknight

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    You mean, you've actually found downloads of those games?
     
  3. muteKi

    muteKi

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  4. LilShootDawg

    LilShootDawg

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    I would try KEmulator which is for the PC since I think that's the one with the best accuracy?
     
  5. Xinus

    Xinus

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    Japanese mobile games used a unique kind of java script called DoJa (stands for Docomo Java) so they are not going to work on J2ME emulators like KEmulator or J2ME Loader. from what i was able to gather not only its not possible to fully emulate these games right now. but pretty much 99% of all mobile DoJa games are lost media.
     
  6. NaoyaShinota

    NaoyaShinota

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    I have something to contribute to this. I have had experience hunting down DoCoMo games. I will share with you what I have learned from searching for the Before Crisis Final Fantasy VII game. In this search I have obtained Sonic 1 and 2 DOJA. But haven’t been able to back it up yet. To start off I believe Sonic Cafe is still in service for now. I-mode will shutdown in 2026. According to this person who has uploaded a video on YouTube of the gameplay it seems they are still in service.

    here are YouTube video game plays of games from Sonic Cafe.



    So how did he record footage like this? This person uses a SH-01C. SH stands for Sharp and Sharp phones are known for having this function to display i-appli (name of the files) on tv. By doing this, connecting to your computer and recording software you are able to do this.


    Demo and Full games
    Demos: these games are preinstalled on Docomo phones from what I have seen. I have a P902i that has Sonic 1 and a P902iS with Sonic 2 preinstalled. so far I have gotten the sonic games I wanted. But missing the maps I need. And a warning I need to issue to those out there is that just because the manual says they are preinstalled doesn’t guarantee that it will be installed on the phone you buy if you buy it. The Before Crisis Final Fantasy VII search has had experiences with this where the demos have been deleted. And the same thing can happen with the Sonic games. Because they fear that you will steal their personal data.


    Full games?
    Full versions of the games do exist but you will most likely not be able to play it. To prevent piracy Docomo has a special feature that when you download a game such as Sonic 2 the phone will patch the SIM card data to the game. Doing this means that if you don’t have the SIM card, you can’t play purchased content. But they do exist. Therefore, the SIM card is the proof of purchase. No SIM card that purchased game = no way of playing game on the phone.


    Where do I buy the phone?
    Buyee is where you go. This gives those outside of Japan the ability to purchase stuff from Yahoo auctions and Mercari. The phones are cheap and much better then eBay. These phones contain Lithium batteries. Make sure you check with Buyee if your area has any problems or not with this. Just to be safe.


    https://buyee.jp

    I got the phone with the Sonic game, can we back it up?
    In theory of course. But seeing as how in Japan it is heavily frowned upon to hack these phones and no overseas marketing has ever been done like any game systems have had none exist. It’s not impossible, it’s just going to need help, and a lot of it. No software extraction method exists. Hardware hack, reverse engineering is the only way for now. You are starting to head into Japan made technology that Japan won’t give data sheets to. This makes it more difficult. But in the right hands it can be done. I am currently looking into making this possible.


    If we did have the file, how would we play it?
    A working emulator does exist from DoCoMo. I went through the trouble of archiving as much SDK for the emulators as possible. There is DoJa and Star. DoJa has very low limitations, but the higher you go which is Star, the less limitations it can have. Different DoJa versions of the Sonic games exist. How many exists? We don’t know. This is because we don’t have a full compatibility list as of now. Some altering of the data may need to be done in order to play it. To this day nobody has ever extracted a purchased i-appli from a phone yet. Here is a link to DOJA/Star emulator and it’s SDK. This does work, I have been successful in making my own i-appli but can’t download it to my phone cause 3G activation doesn’t exist in my area.

    https://archive.org/details/i-appli-tools-updated

    Sonic the Hedgehog 1 and 2 known compatible phones and details

    Info for this port of the game is small. Because not much info is available online.

    Sonic The Hedgehog 1 compatible with 504/505/700/FOMA/900/901/902/903
    Sonic the hedgehog 2 compatible with P902iS

    Sonic The Hedgehog 1
    This Demo is just the first half of the game. Contains 3 Maps, Green Hill Zone, Marble Zone and Spring Yard Zone. Can select any stage that is installed on the phone. The remaining maps is a separate application depending on some phones.

    P902i: pre installed (demo) (pg 312)
    Source: https://www.nttdocomo.co.jp/binary/pdf/support/manual/P902i_J_All.pdf

    P701iD: pre installed (demo) pg328
    Source: https://www.nttdocomo.co.jp/binary/pdf/support/manual/P701iD_J_All.pdf

    P901iTV: pre installed (demo) pg305
    Source https://www.nttdocomo.co.jp/english...ble/manual/download/p901itv/P901iTV_E_All.pdf

    Sonic the hedgehog 2
    P902iS pre installed (demo) pg302
    Source: https://www.nttdocomo.co.jp/binary/pdf/support/manual/p902is/P902iS_J_All.pdf
    The game has Difficulty settings the following are available :EASY, MEDIUM and HARD


    Some noticeable differences from the Sonic 1 game installed on Docomo phone.
    Their is a noticeable difference between the game that is installed on the P901iTV and the P902i. This would be Stage select. Stage select is available for all Sonic games however the preinstalled game on the P901iTV only offers the first 3 stages of Sonic.

    The P902i has an option to select the all of the stages, however when you select anything after spring Yard Zone the game will ask the player to read data from SD. If the data isn’t on the SD card, it will ask to connect to Sega Cafe.


    The reason for this feature is the DoJa Profile that Docomo phones have. Almost all Docomo phones can play i-appli and they have different version of DoJa profile. P901iTV has 4.0, P902i has 4.1. DoJa 4.1 and above gives the i-appli the ability to read i-appli content from an external memory. This is very useful because the DoJa profile alone is limited. As well as the maximum size you can download is small. With this feature phone can move data to and from SD card.
     
    Last edited by a moderator: Jun 10, 2021
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  7. NaoyaShinota

    NaoyaShinota

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    Did You Know Gaming did a video on mobile Japanese phone games. Sonic is mentioned. Hope this spreads awareness.
    https://youtu.be/tKH0x21rj1Y
     
  8. Yuzu

    Yuzu

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    Thank you for all of this info!
     
  9. NaoyaShinota

    NaoyaShinota

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    If anyone would like to contribute or help we have a discord dedicated to searching for games like these and more. Help is always welcomed. Cause these games are going to be extinct soon if we don’t do anything about it. https://discord.gg/SjdHtXpa
     
  10. NaoyaShinota

    NaoyaShinota

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    Hopefully this info gets spreader around like wildfire. I think these games should be available to purchase on a different phone of some kind. They are unique and do not deserve to go extinct. But hopefully one day someone will look into this and help us solve the problem