Paradox lifted the stock market during the debut on Tuesday.
Shortly after market opening, had the company's share has risen from the subscription price of 33 kronor to 44.50 kronor.
The competitor Starbreeze is also a market capitalization of 5.6 billion.
Read more: Paradox warns Stock Exchange for the listing
Overall, it shares with a value of 539 million crowns that have been offered for sale.
Shares of 419 million crowns have been put through the Avanza in the traditional way.
Read also: Highest Ever for Swedish gambling company