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Note 2 - Summary of Significant Accounting Policies (Tables)
9 Months Ended
Sep. 30, 2018
Notes Tables  
Consolidation, Wholly Owned and Less than Wholly Owned Subsidiary, Parent Ownership Interest [Table Text Block]
Company
Registered
% Owned
Shoal Media (Canada) Inc.
British Columbia, Canada
100%
Coral Reef Marketing Inc.
Anguilla
100%
Rooplay Media Ltd.
British Columbia, Canada
100%
Rooplay Media Kenya Limited
Kenya
100%
Shoal Media Inc.
Anguilla
100%
Shoal Games (UK) Plc
United Kingdom
99%
Shoal Media (UK) Ltd.
United Kingdom
100%
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
   
2018
   
2017
 
Expected dividend yield
   
-
     
-
 
Expected stock price volatility
   
109
%    
-
 
Weighted average volatility
   
96
%    
-
 
Risk-free interest rate
   
1.97
%    
-
 
Expected life of options (years)
   
5
     
-
 
Forfeiture rate
   
5
%    
-
 
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]
   
September 30,
2018
   
December 31,
2017
 
Average stock price
   
-
     
CAD $0.65
 
Expected dividend yield
   
-
     
-
 
Expected stock price volatility
   
-
     
93.74
%
Risk-free interest rate
   
-
     
1.66
%
Forfeiture rate (years)
   
-
     
0.5