Segment reporting (Details)	6 Months Ended	12 Months Ended
Jun. 30, 2021 segment item	Dec. 31, 2020 USD ($)
Segment reporting
Number of operating segments	1	1
Number of business activity	1	1

Number of business activities incurred during the period.

No definition available.

Name:	gdev_NumberOfBusinessActivities
Namespace Prefix:	gdev_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration