XML 64 R50.htm IDEA: XBRL DOCUMENT
v3.24.3

Long-Term Investments (Details) - USD ($) | 9 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2024 | Jan. 31, 2024 | Dec. 31, 2023 | Oct. 31, 2023 | Sep. 30, 2023 | Jun. 30, 2023 | May 31, 2023
Long-Term Investments [Line Items] |  |  |  |  |  |  |
Investments consideration | $ 1,500,000 |  | $ 1,770,800 |  |  |  |
Impairment charges | $ 546,000 |  |  |  |  |  |
Investment in Marsland [Member] |  |  |  |  |  |  |
Long-Term Investments [Line Items] |  |  |  |  |  |  |
Investments consideration |  |  |  |  |  |  | $ 300,000
Ownership percentage |  |  |  |  |  |  | 30.00%
Investment in Quleduo [Member] |  |  |  |  |  |  |
Long-Term Investments [Line Items] |  |  |  |  |  |  |
Investments consideration |  | $ 1,500,000 |  |  | $ 1,500,000 |  | $ 1,500,000
Ownership percentage |  | 25.00% |  |  | 25.00% |  | 25.00%
Investment in DaoMax [Member] |  |  |  |  |  |  |
Long-Term Investments [Line Items] |  |  |  |  |  |  |
Investments consideration |  |  | $ 546,000 | $ 546,000 |  | $ 546,000 |
Ownership percentage |  |  | 7.60% | 7.60% |  | 7.60% |

X
- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482130/360-10-45-4 + Details
Name: | us-gaap_AssetImpairmentCharges
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481687/323-10-50-3 + Details
Name: | us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(12)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_LongTermInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_SubsidiaryOrEquityMethodInvesteeLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=mpu_InvestmentInMarslandMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=mpu_InvestmentInQuleduoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=mpu_InvestmentInDaoMaxMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |