Note 2 - Summary of Significant Accounting Policies - Subsidiaries (Details)	Sep. 30, 2018
Shoal Media (Canada) Inc. [Member]
Ownership percentage	100.00%
Coral Reef Marketing Inc. [Member]
Ownership percentage	100.00%
Rooplay Media Ltd. [Member]
Ownership percentage	100.00%
Rooplay Media Kenya Limited [Member]
Ownership percentage	100.00%
Shoal Media Inc. [Member]
Ownership percentage	100.00%
Shoal Games (UK) PLC [Member]
Ownership percentage	99.00%
Shoal Media (UK) Ltd. [Member]
Ownership percentage	100.00%