I'll admit it somewhat irks me we shipped games inside of the Program Library which shell out to their own executables and don't run at all on Media Center Extenders (luckily they don't show up on those devices taunting the user with hollow promises). I reinstall multiple times per week on multiple machines and finally got tired of them so took a moment to 'solve' the problem. If you'd like to get rid of them yourself follow these simple directions...

1) Launch Notepad.

2) Copy + Paste the following:

Windows Registry Editor Version 5.00
[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Media Center\Extensibility\Applications\{3C1BB651-D564-46a7-99BA-8D40BCB6FA7D}]
[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Media Center\Extensibility\Applications\{48095937-BA42-4bb6-9869-EBAC2229D3AF}]
[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Media Center\Extensibility\Applications\{4F5AC696-6D21-4dac-BC8B-8287245B2A13}]
[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Media Center\Extensibility\Applications\{866BD81A-F32D-4b44-830A-F5C37585CB9D}]
[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Media Center\Extensibility\Applications\{A897807C-6278-46bc-B973-9DD1DE8551DF}]
[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Media Center\Extensibility\Applications\{B4C403DA-6240-4070-80F1-1B1689FF301F}]
[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Media Center\Extensibility\Applications\{F755EA7F-777E-498f-831D-E3F3F6FDA018}]
[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Media Center\Extensibility\Categories\Services\Games\{115EADF1-41C4-471b-8FE5-7A52B91BFE75}]
[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Media Center\Extensibility\Categories\Services\Games\{13FCBFA9-499D-417c-95BB-71DF7980BEB5}]
[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Media Center\Extensibility\Categories\Services\Games\{1F3BD1B5-7323-4ec0-A518-47FF6B1DDC46}]
[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Media Center\Extensibility\Categories\Services\Games\{6B51FBA8-28D5-45d4-BEE8-A9715F724D39}]
[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Media Center\Extensibility\Categories\Services\Games\{76CA43A7-7878-4c7b-BC8B-BE0CAB71ACE8}]
[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Media Center\Extensibility\Categories\Services\Games\{C99561F0-BEC8-4af4-9926-40BB79D34B07}]
[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Media Center\Extensibility\Categories\Services\Games\{DD4B1666-AA76-4979-9130-EC9D6F8FE52E}]
[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Media Center\Extensibility\Entry Points\{115EADF1-41C4-471b-8FE5-7A52B91BFE75}]
[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Media Center\Extensibility\Entry Points\{13FCBFA9-499D-417c-95BB-71DF7980BEB5}]
[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Media Center\Extensibility\Entry Points\{1F3BD1B5-7323-4ec0-A518-47FF6B1DDC46}]
[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Media Center\Extensibility\Entry Points\{6B51FBA8-28D5-45d4-BEE8-A9715F724D39}]
[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Media Center\Extensibility\Entry Points\{76CA43A7-7878-4c7b-BC8B-BE0CAB71ACE8}]
[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Media Center\Extensibility\Entry Points\{C99561F0-BEC8-4af4-9926-40BB79D34B07}]
[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Media Center\Extensibility\Entry Points\{DD4B1666-AA76-4979-9130-EC9D6F8FE52E}]

3) Save as 'RemoveGamesFromMediaCenterLibrary.reg'. (Make sure you have a .reg extension, otherwise it's a plain text file).

4) Double-click the newly created reg file.

5) Click the Yes button in the Registry Editor warning dialog box.

6) Click the OK button in the Registry Editor success dialog.

As is the norm, I make no guarantees -- editing the registry can be dangerous business.

If you have an opinion one way or another about these games (Love / Hate) leave a comment -- we are listening.