Bubble Bobble (Arcade)
This game has a prototype article
They're Bubblin' and Bobblin' all over the place.
|Sprites of the player getting squished exists in the ROM. Purpose unknown.|
|Found in the same set as the early popped enemy graphics. These designs don't match up with any enemy in the final game, but the first one resembles the robot heads from Rainbow Islands.|
|There's no bonus item worth 1,200 points, but here's a graphic for it nonetheless.|
|This 1,000-point graphic is in the same style and graphics bank as the "multiple enemy popped bonus" graphics. Having a graphic for popping just one enemy seems unnecessary and unwarranted, which is likely why it was never used.|
|Graphics for score multipliers! Player scores would certainly be inflated if these were actually implemented in the game.|
|Player markers. Flashing player markers. Small, flashing player markers.|
|Graphics for what look like gates, maybe? These use the game's level palettes, so this is but one color scheme.|
|An alternate bubble design. This is probably from an earlier stage of development, as none of the game's palettes fit the design properly.|
|Two different baskets, stored with the rest of the special bonus items. What they would have done is a mystery, but they'd probably act like the food items and give points.|
|Oddly enough, Bubble Bobble contains a full set of slot machine icons. These aren't used anywhere and there's no palette that fits them.|
There is a real Bubble Bobble slot machine, but that's neither here nor there.
|Animations that were likely meant to be used after one player got a game over. Look at him, he's got a little purple suit on! That's adorable.|
These animations are used, however, in the continue prompt of the X68000 port.
Three sounds in the game are unused. Sound 2F would later be used in the 1996 DOS version when getting an extra life, and the Plus/Neo ports for WiiWare and the Xbox 360 for various menus.
Put the following code in MAME's bublbobl.xml cheat file and activate it to get this bonus. Please note that due to a mistake in the multiple enemy kill table, this won't give 100,000 points, but just 10!
<cheat desc="100,000 Point Bonus"> <script state="on"> <action>maincpu.pb@F677=08</action> </script> </cheat>
Unused Bubble Drops
Two of the game's end-of-level bubble drops are unused. The graphics for these items were overwritten sometime in development, so they now use the Red Crown / Level 50 Door item graphics.
Put this code in MAME's bublbobl.xml cheat file to make these items drop:
<cheat desc="Unused Bubble Drops"> <parameter> <item value="0x0A">Red Crown </item> <item value="0x19">Brown Door</item> </parameter> <script state="change"> <action>maincpu.pb@F464=01</action> <action>maincpu.pb@F465=param</action> </script> </cheat>
Round 100 Placeholder Setup
Round 100 has a full set of enemies in its level data, just in case the game fails to load the Super Drunk boss routine. Put the following code in MAME's bublbobl.xml cheat file to see this setup:
<cheat desc="Disable Super Drunk"> <script state="run"> <action>maincpu.mw@10637=CA80</action> <action>maincpu.mw@12854=C080</action> </script> <script state="off"> <action>maincpu.mw@10637=CA63</action> <action>maincpu.mw@12854=C063</action> </script> </cheat>
A version string can be found on all variants of the game. This is stored on the main CPU at 0x1FF4C.
|Japan Version 0.0|
|US (Romstar) Version 1.0|
|Japan Version 0.1|
|US (Romstar) Version 5.1|
MCU Build Date
A second build date (and what is presumably the internal name for the Motorola MC6801U4 Microcontrollers) is stored at the end of the MCU at FFDF. Unlike the game version, this is identical for all versions of the game.
This is what the "BR10" text on Round 59 refers to. So that's one mystery solved.