Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2017	Mar. 26, 2018
Document And Entity Information
Entity Registrant Name	Worlds Inc.
Entity Central Index Key	0000001961
Document Type	10-K
Document Period End Date	Dec. 31, 2017
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Is Entity a Well-known Seasoned Issuer?	No
Is Entity a Voluntary Filer?	No
Is Entity's Reporting Status Current?	Yes
Entity Filer Category	Smaller Reporting Company
Entity Public Float		$ 44,617,927
Entity Common Stock, Shares Outstanding		49,354,666
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2017