Company: GAME
Filing Date: 2025-10-07
Form Type: DEFA14A
Source: 0001493152-25-017323
Chunk: 0

Company: GameSquare Holdings, Inc.
Filing Date: 2025-10-07
Form: DEFA14A
Chunk 0
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<div align='center'>UNITED STATES
SECURITIES AND EXCHANGE COMMISSIONWashington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of
the Securities Exchange Act of 1934</div>

| Filed                                
 by the Registrant                    | ☒ |
| Filed                                
 by a Party other than the Registrant | ☐ |

Check the appropriate box:

| ☐ | Preliminary                                                       
 Proxy Statement                                                   |
| ☐ | Confidential,                                                     
 for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) |
| ☐ | Definitive                                                        
 Proxy Statement                                                   |
| ☒ | Definitive                                                        
 Additional Materials                                              |
| ☐ | Soliciting                                                        
 Material under §240.14a-12                                        |

<div align='center'>GAMESQUARE HOLDINGS, INC.

(Name of Registrant as Specified In Its Charter)

Name of Person(s) Filing Proxy Statement, if other than the Registrant</div>

Payment of Filing Fee (Check the appropriate box):

| ☒ | No                                                                                               
 fee required.                                                                                    |
| ☐ | Fee                                                                                              
 paid previously with preliminary materials.                                                      |
| ☐ | Fee                                                                                              
 computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11. |

<div align='center'>UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): October 7, 2025

GameSquare Holdings, Inc.

(Exact Name of Registrant as Specified in Its Charter)</div>

| Delaware              |     | 001-39389   |     | 99-1946435     |
| (State                
 or Other Jurisdiction 
 of                    
 Incorporation)        |     | -Commission 
 File        
 Number      |     | -IRS           
 Employer       
 Identification 
 No.            |

| 6775                            
 Cowboys Way, Ste. 1335          
 Frisco,                         
 Texas, USA                      |     | 75034 |
| (Address                        
 of Principal Executive Offices) |     |  -Zip 
  Code |

<div align='center'>Registrant’s Telephone Number, Including Area