Cover - USD ($)	12 Months Ended
	Dec. 31, 2020	Mar. 09, 2021	Jun. 30, 2020
Cover [Abstract]
Document Type	10-K
Amendment Flag	false
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Dec. 31, 2020
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2020
Current Fiscal Year End Date	--12-31
Entity File Number	000-24115
Entity Registrant Name	WORLDS INC
Entity Central Index Key	0000001961
Entity Tax Identification Number	22-1848316
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	11 Royal Road
Entity Address, City or Town	Brookline
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	02445
City Area Code	617
Local Phone Number	725-8900
Title of 12(b) Security	Common Stock, par value $0.001 per share
Trading Symbol	WDDD
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 13,209,449
Entity Common Stock, Shares Outstanding		56,814,833