| Cover | Nov. 14, 2024 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Nov. 14, 2024 |
| Entity File Number | 001-42202 |
| Entity Registrant Name | HIGH ROLLER TECHNOLOGIES, INC. |
| Entity Central Index Key | 0001947210 |
| Entity Tax Identification Number | 87-4159815 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 400 South 4th Street |
| Entity Address, Address Line Two | Suite 500-#390 |
| Entity Address, City or Town | Las Vegas |
| Entity Address, State or Province | NV |
| Entity Address, Postal Zip Code | 89101 |
| City Area Code | (702) |
| Local Phone Number | 509-5244 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, par value $0.001 per share |
| Trading Symbol | ROLR |
| Security Exchange Name | NYSEAMER |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
