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	<id>http://3do.world/index.php?action=history&amp;feed=atom&amp;title=OPeNBooK_Co_Ltd</id>
	<title>OPeNBooK Co Ltd - Revision history</title>
	<link rel="self" type="application/atom+xml" href="http://3do.world/index.php?action=history&amp;feed=atom&amp;title=OPeNBooK_Co_Ltd"/>
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	<updated>2026-06-04T17:39:52Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
	<generator>MediaWiki 1.44.5</generator>
	<entry>
		<id>http://3do.world/index.php?title=OPeNBooK_Co_Ltd&amp;diff=17039&amp;oldid=prev</id>
		<title>Elliogle at 03:02, 31 August 2025</title>
		<link rel="alternate" type="text/html" href="http://3do.world/index.php?title=OPeNBooK_Co_Ltd&amp;diff=17039&amp;oldid=prev"/>
		<updated>2025-08-31T03:02:12Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 03:02, 31 August 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l9&quot;&gt;Line 9:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 9:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;|-&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;|-&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;! Founded&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;! Founded&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;| 1993&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;| &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;June &lt;/ins&gt;1993&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;|-&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;|-&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;! Status&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;! Status&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;| Merged with 9003 - 1996&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;| Merged with 9003 - &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;October &lt;/ins&gt;1996&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;|-&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;|-&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;! Head Quarters&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;! Head Quarters&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Elliogle</name></author>
	</entry>
	<entry>
		<id>http://3do.world/index.php?title=OPeNBooK_Co_Ltd&amp;diff=17038&amp;oldid=prev</id>
		<title>Elliogle: Created page with &quot;{| style=&quot;float:right;border:1px solid black&quot; !colspan=&quot;2&quot; | thumb |- ! Local Name | オープンブック |- ! Company Type | Developer/Publisher |- ! Founded | 1993 |- ! Status | Merged with 9003 - 1996 |- ! Head Quarters | Tokyo Japan |- |}   ==3DO Games==  {| class=&quot;wikitable sortable&quot; ! Game ! Region ! Code ! Type ! Developer ! Publisher ! Release Date ! Local Title ! Rarity |- | Tower, The || {{Template...&quot;</title>
		<link rel="alternate" type="text/html" href="http://3do.world/index.php?title=OPeNBooK_Co_Ltd&amp;diff=17038&amp;oldid=prev"/>
		<updated>2025-08-31T02:59:11Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;quot;{| style=&amp;quot;float:right;border:1px solid black&amp;quot; !colspan=&amp;quot;2&amp;quot; | &lt;a href=&quot;/index.php?title=File:Openbook_Co_Company_Logo.png&quot; title=&quot;File:Openbook Co Company Logo.png&quot;&gt;center|thumb&lt;/a&gt; |- ! Local Name | オープンブック |- ! Company Type | Developer/Publisher |- ! Founded | 1993 |- ! Status | Merged with 9003 - 1996 |- ! Head Quarters | Tokyo Japan |- |}   ==3DO Games==  {| class=&amp;quot;wikitable sortable&amp;quot; ! Game ! Region ! Code ! Type ! Developer ! Publisher ! Release Date ! Local Title ! Rarity |- | &lt;a href=&quot;/index.php?title=The_Tower(JP)&amp;amp;action=edit&amp;amp;redlink=1&quot; class=&quot;new&quot; title=&quot;The Tower(JP) (page does not exist)&quot;&gt;Tower, The&lt;/a&gt; || {{Template...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;{| style=&amp;quot;float:right;border:1px solid black&amp;quot;&lt;br /&gt;
!colspan=&amp;quot;2&amp;quot; | [[File:Openbook_Co_Company_Logo.png|center|thumb]]&lt;br /&gt;
|-&lt;br /&gt;
! Local Name&lt;br /&gt;
| オープンブック&lt;br /&gt;
|-&lt;br /&gt;
! Company Type&lt;br /&gt;
| Developer/Publisher&lt;br /&gt;
|-&lt;br /&gt;
! Founded&lt;br /&gt;
| 1993&lt;br /&gt;
|-&lt;br /&gt;
! Status&lt;br /&gt;
| Merged with 9003 - 1996&lt;br /&gt;
|-&lt;br /&gt;
! Head Quarters&lt;br /&gt;
| Tokyo Japan&lt;br /&gt;
|-&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
==3DO Games==&lt;br /&gt;
&lt;br /&gt;
{| class=&amp;quot;wikitable sortable&amp;quot;&lt;br /&gt;
! Game&lt;br /&gt;
! Region&lt;br /&gt;
! Code&lt;br /&gt;
! Type&lt;br /&gt;
! Developer&lt;br /&gt;
! Publisher&lt;br /&gt;
! Release Date&lt;br /&gt;
! Local Title&lt;br /&gt;
! Rarity&lt;br /&gt;
|-&lt;br /&gt;
| [[The Tower(JP)|Tower, The]] || {{Template:Flag-jp}} || FZ-SJ7051 || Construction and management simulation || [[OPeNBooK Co Ltd|OPeNBooK Co Ltd]] || [[OPeNBooK Co Ltd|OPeNBooK Co Ltd]] || March 8, 1996 || ザ・タワー || 3&lt;br /&gt;
|-&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
==Overview==&lt;br /&gt;
&lt;br /&gt;
OPeNBooK Co., Ltd (オープンブック) was a Japanese video game developer founded by Yutaka &amp;quot;Yoot&amp;quot; Saito in 1993. It is known primarily for its SimCity-inspired simulation game The Tower (also known as SimTower). It merged[1] with 9003 to form OPeNBooK9003 in 1996.&lt;br /&gt;
&lt;br /&gt;
OPeNBooK&amp;#039;s employees would later break away from the merger before being absorbed by Yoot Saito&amp;#039;s second company, Vivarium.&lt;br /&gt;
&lt;br /&gt;
==History==&lt;br /&gt;
&lt;br /&gt;
Here is the full history, including post merger, of the company:&lt;br /&gt;
&lt;br /&gt;
* June 1993 - Yutaka Saito founded OPeNBooK.&lt;br /&gt;
* 1994 (Heisei 6) - The game software &amp;quot; The Tower &amp;quot; is released (initially only for Macintosh ).&lt;br /&gt;
* April 1996 - Saito establishes Vivarium Co., Ltd.&lt;br /&gt;
* October 1996 - 9003, inc. , which produced games such as Aquazone , and OPeNBooK merged to form OpenBook 9003 .&lt;br /&gt;
* 1999 (Heisei 11) - Sega releases the Dreamcast game &amp;quot;Seaman: Forbidden Pet.&amp;quot;&lt;br /&gt;
* March 1 , 2000 OpenBook Co., Ltd. (first generation) was established. It separated from OpenBook 9003 and established a new company centered around former OPeNBooK staff, inheriting the copyright of &amp;quot;The Tower.&amp;quot;&lt;br /&gt;
On the same date, Open Book 9003 changed its name to Cinomix Co. , Ltd. and inherited the copyrights for &amp;quot;Aquazone&amp;quot; and &amp;quot;Pina.&amp;quot;&lt;br /&gt;
Vivarium&lt;br /&gt;
* October 2004 - Open Book Co., Ltd. (first generation) absorbed Vivarium Co., Ltd., and changed its name to Vivarium Co., Ltd.&lt;br /&gt;
* April 28, 2005 - Nintendo releases the Game Boy Advance software &amp;quot;The Tower SP.&amp;quot;&lt;br /&gt;
* April 13, 2006 (Heisei 18) - Nintendo releases the Nintendo GameCube software &amp;quot; Otama .&amp;quot;&lt;br /&gt;
* April 25th 2007 - Established subsidiary Digitoys through joint investment with Genki Co., Ltd. (170 shares of Vivarium, 30 shares of Genki).&lt;br /&gt;
* October 18th 2007 - Sega releases the PlayStation 2 software &amp;quot;Seaman 2: Peking Man Training Kit.&amp;quot;&lt;br /&gt;
* June 26, 2008 - Digitoys releases the Nintendo DS software &amp;quot;The Tower DS.&amp;quot;&lt;br /&gt;
Open Book (2nd generation)&lt;br /&gt;
* 2009 (Heisei 21) - The company absorbed its subsidiary Open Book and established a new company, Open Book Co., Ltd. (second generation).&lt;/div&gt;</summary>
		<author><name>Elliogle</name></author>
	</entry>
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